useful
美 [ˈjusf(ə)l] 
英 [ˈjuːsf(ə)l]
- adj.有用的；有益的；实用的；有帮助的
- 网络具利用价值；有用性；有效的
反义词
同义词
英汉双解
1. | 有用的；有益的；实用的；有帮助的that can help you to do or achieve what you want |
| |
| It can be useful to write a short summary of your argument first. 先把你的论点纲要写下来可能会有帮助。 |
| He might be useful to us. 我们也许用得上他。 |
| These plants are particularly useful for brightening up shady areas. 这些植物特别有助于让背阴的地方明亮起来。 |
| Don't just sit watching television─ make yourself useful ! 别光坐着看电视，帮一下忙吧！ |
| This information could prove useful . 这条信息往后也许有用。 |
| Your knowledge of German may come in useful(= be useful in a particular situation) . 你的德文知识可能会派上用场。 |
| Some products can be recycled at the end of their useful life. 有些产品过了有效使用年限后是可以回收再利用的。 |
2. |
好的；合格的good; of the right standard |
| He's a very useful player. 他是个很棒的运动员。 |
英汉解释
英英解释
例句
This probably would not be very useful as it would only be possible to everaccess one cache at a time.
这可能并不是很有效，因为在同一时间只有可能存取一个缓存。
Different laptops may respond to 'standby' in different ways - in many it is only a temporary state and may not be useful for you.
不同的笔记型电脑有不同的「待机」方式-多数情况下只是一个临时状态，不一定对您有用。
And this model is going to be very, very useful for a lot of the things that we'll treat.
这个例子非常有用，他会对我们研究其他东西有所帮助。
Like an entertaining satire, the plot and characters of that report offer useful material for contemplation.
像娱乐性讽刺一样，报道的情节和角色提供了很好的使人深思的材料。
It is often useful to recognize a particular pattern in text and mark it up.
识别文本中的特定模式并进行标记通常十分有用。
Based on what you know of the job market, which of your courses were the most useful? The least?
根据你的了解，学什么课程对于就业最有用？最没有用的课程是？
When you live a life of deception you get to be very good at it; a well-constructed lie is a lot more useful than the truth.
当你生活在一个被谎言包围的世界中于是你定会非常善于此；一个有着完美构建的谎言往往要比真话有用的多。
But I gave it a chance, because smart people who I trusted told me that it's very useful.
但是我给了它一次机会，因为我信任的那个聪明的家伙告诉我它很有用。
However, it is often useful to provide additional constructors.
然而，提供其他构造函数通常十分有用。
It could be useful, or at least interesting, to let a utility on my home system keep track of hits to my Web server.
让我的主系统上的某个实用程序跟踪对我的Web服务器的点击率，这可能十分有用，至少非常有趣。
It's easy to hammer out rough drafts, but to turn those rough drafts into something readable and useful is another matter entirely.
努力写出一份未完成的草稿是很简单，但是要把这些草稿变为能读且有用的东西却是完全不同的一回事了。
Regular expressions are algorithmically interesting, easy to implement in their simpler forms, and very useful.
正则表达式演算有趣，易於执行的简单形式，和非常有用的。
But it wasn't necessarily all that useful; you simply type a word in and eventually many minutes later you get a response back.
但它并不是很实用；，你把单词输进去，好几分钟后才会有回应。
These appearances suggest that this imaging technique is useful for the diagnosis of isolated dissection of the superior mesenteric artery.
这些表现说明了此种影像技术对于诊断单独上肠系膜动脉剥离是有帮助的。
Before you answer, remember, A grown man with children is in a very different position Than a young man. The money could be useful now.
记住，回答我之前，一个有家室的男人跟一个年轻男孩，的看法应该是不一样的。现在对你来说钱可能很重要了。
It's a card that allows you to withdraw cash from any one of our ATMs without any extra charge. It's a very useful service.
那是一种可以让你通过我们任何一台取款机提款的卡而且这不需要另外收费，是非常有用的服务。
In juggling multiple goals and increasing the likelihood of meeting them, it is often useful to first focus on the goals themselves.
在多重目标以及在增强实现多重目标可能性的游戏中，先着眼于目标本身往往是有效的。
A superbly useful talent for a rogue is ranger, which allows you to call an animal to join your party.
为一个流氓阿寄望有用的人才是护林员，它允许您调用动物加入您的党。
It's useful in pointing out how much someone will save, over a greater period of time, by buying from you.
指出如果从你这里买东西期限更长些能节省多少钱的话这招很管用。
A program that appears to be useful or harmless but that contains hidden code designed to exploit or damage the system on which it is run.
一种看上去有用或无害但实际上包含旨在利用或破坏运行它的系统的隐藏代码的程序。
She found many different ways of being useful to him.
她在许多别的事情上为他效过劳。
I only wish I could be more useful; but you see I do all in my power.
我自恨不能帮更大的忙，不过，你知道我是有多大力尽多大力。
In a little time I made a great progress in the business, and became a useful hand to my brother.
我不久就熟悉了自己的业务，成了哥哥的得力助手。
There are many kinds of dogs; some are used to tend sheep; some are useful for hunting.
狗的种类很多，有的用于保护羊群，有的用于打猎。
Electrical energy is so useful because it is readily converted into other kinds
电能是非常有用的，因为它可以很容易地转换成其他能量形式。
Many useful compilations have been made of these various chemical compounds that have been studied, and of their practical applications.
对所研究的这些不同的化合物和它们的实际应用，已有很多有用的专著。
There is a useful German saying, "The trees do not grow up to the sky. "
德国有一句有用的俗语：“大树高不过天”。
In his useful days Dede Antanas used to be a scholar, and really make up all the love letters of his friends.
安东纳斯老爹年轻时候是个饱学之士，他的朋友们所写的情书确实都由他捉刀。
The only way I can ever repay you is by turning out a very useful citizen.
我只有成为一个有用的公民，才能报答你。
After they overcame their initial reserve, the two boys became useful to one another.
这两个男孩打破了最初的隔阂后，成为互相的伙伴。
The result of such studies are useful but should not be regarded as definite.
这些研究结果是有用的，但不能看作是权威性的。
It spread through France, where wild rabbits are not generally regarded as a pest but as a sport and a useful food supply.
法国人普遍认为，野兔并不是有害动物，而是取乐的猎物和有用的事物来源。
It is possible to attribute a useful mathematical meaning to U(x, W).
赋予U（x，W）一种有用的数学意义是可能的。
It was a collaboration that produced extremely useful results.
这是一次带来极其有益的成果的合作。
This equipment should utilize the advancements of science and convert them from mere scientific discoveries to useful applications.
这种电子设备需要利用科研成果，使其从单纯的科学发明变为实际的应用。
In order to develop practical and useful strategies, a business or other organization should engage in a thorough self-appraisal.
为了发展实际而有用的策略，一个企业或者其他组织必须进行严格的自我评估。
He ladled out many ideas, but none of them were useful.
他出了很多主意，但没有一个管用。
This adventure was a useful lesson.
这番周折给我上了有益的一课。
Yet this is not to deny that general economics can give a useful background for such activities.
经济学概论可以给上述的许多活动提供有用的参考。
A transformation that is most useful in the application of the hodograph method is the inversion transformation.
在速端曲线法的应用中，一种最有用的变换是反演变换。
The term remains useful in discussing the novelists of the 1920s.
在讨论20年代的小说家时，这个名称仍然是有用的。
This new dictionary is very useful [helpful] to me.
对我来说这本新词典很顶事。
Photos make useful teaching aids.
照片可以成为有用的教具。
That's a useful book to people who think of literary life.
那是一本对想要从事文学生活的人有用的书。
I've made some useful contacts in journalism.
我在新闻界结交了一些有用的人。
'Thank you, 'replied Scrooge politely. But secretly he thought, 'Bah! A night of unbroken sleep is a more useful thing to have! '
“谢谢你，”斯克罗吉礼貌地回答说，但他心里想，“呸！睡个一晚上没人打扰的觉比什么都强。”
As I said in certain circumstances this can be very useful but in general it leads to complete imbalance!
如我之前所说，在某些情况下这非常有用，但绝大多数时候，我会完全失去平衡。
Praise is always nice to receive, but criticism can often be so much more useful.
赞美是总令人欣然接受，但批评，往往可以有更多的用处。
Class is a useful tool for logging simulation measures , but you could record events by any other technique you wished also .
类对记录模拟措施是个有用的工具，但您也可以通过您想使用的其它任何技术来记录事件。
Now, however, technology has advanced to the point where the useful mobile robot is an immediate possibility.
然而现在，技术已发展到能立即制造实用又能行走的机器人的阶段。
Based on what you know of the job market, which of your course were the most useful? The least?
根据你对就业市场的了解，你认为你所学的什么课程最有用？什么课程最没有用？
A case study of a more typical organization would have been more useful to a broader group of readers.
一个典型组织的学习案例对很多读者都非常有用。
Wizard: Indicates that this counter is not likely to be useful to any users.
巫师级：表明该计数器不可能对任何用户有用。
typeof is often useful in conjunction with the statements-within-expressions feature.
typeof在协助内嵌表达式的声明时非常有用。
Estimated useful life by aircraft, of which some of the aircraft should have been scrapped, but the FAA did not know.
按飞机使用年限推算，其中，有些飞机应当现已报废，但联邦航空局并不知情。
This mode is useful in situations where you know when a task starts and stops but have no way of knowing how far the task has progressed.
这种模式在这样几种情形下是有用的，您可以知道一项任务何时开始以及何时停止，但是您没法知道任务进展了多远。
A point just came up on WAU, and I thought maybe it would be useful to speak about it here as well, in more detail.
一个想法在WAU上萌生了，我想在这里更详细得讲一下应该对大家有所帮助。
However, it is often useful to load application state data when the application starts .
类。但该类通常用于在应用程序启动时加载应用程序状态数据。
Here are a few things I've found useful in trying to build this rewarding habit.
我发现在培养阅读这种有益的习惯，下面几个建议十分有用。
Although it might be a push to call X-Plane "useful" , it's certainly a great way to kill a few minutes of spare time.
虽然这可能是一个推动呼叫X-Plane的“有用”，它肯定是一个伟大的方式来杀死业余时间几分钟。
A few days later her defences were back in place, and she dedicated herself to being as useful as she could to her old friend.
几天之后，她的心理防线重新恢复，她又忠心耿耿、尽职尽责地帮助起这位老朋友来。
They make it easy to combine different programs together to do useful actions.
它们可以简单地将不同的程序组合在一起执行有用的操作。
Being able to see all this information at once could be useful to investors.
能够一眼马上看到全部信息对于投资者会很受用。
While newspapers do not carry the latest, up-to-the minute world news, they give us a GREat deal of useful knowledge.
虽然报纸来不及刊载最新、最近的世界新闻，但是溶胲提供我们非常多有用的知识。
One of the things that makes processing DITA with standard transforms so useful is that those transforms are easy to override.
通过标准转换处理DITA的一大优点是很容易重写这些转换。
