stem
美 [stem] 
英 [stem]
词形变化
过去式：stemmed 第三人称单数：stems 现在分词：stemming 反义词
同义词
英汉双解
1. | （花草的）茎；（花或叶的）梗，柄the main long thin part of a plant above the ground from which the leaves or flowers grow; a smaller part that grows from this and supports flowers or leaves |
2. | （高脚酒杯的）脚the long thin part of a wine glass between the bowl and the base |
3. | 烟斗柄the thin tube of a tobacco pipe |
4. | 有…茎（或梗）的having one or more stems of the type mentioned |
| a long-stemmed rose 一枝长茎玫瑰 |
5. | 词干the main part of a word that stays the same when endings are added to it |
| ‘Writ’ is the stem of the forms ‘writes’, ‘writing’ and ‘written’. writ 是 writes、writing 和 written 三个词的词干。 |
1. | ~ sth 阻止；封堵；遏止to stop sth that is flowing from spreading or increasing |
| The cut was bandaged to stem the bleeding. 伤口已包扎止血。 |
| They discussed ways of stemming the flow of smuggled drugs. 他们讨论了遏制走私毒品流通的办法。 |
| The government had failed to stem the tide of factory closures. 政府没有控制住工厂的倒闭潮。 |
习惯用语
from stem to stern
从船头到船尾all the way from the front of a ship to the back
英汉解释
v. | 7. 〈美〉起源于,起因于,(由...)发生,来自 (from out of) |
n. | |
abbr. | 1. (=Scanning transmission electron microscope)扫描透射式电子显微镜 |
英英解释
例句
THE 20S ARE LIKE the stem cell of human development, the pluripotent moment when any of several outcomes is possible.
这些20来岁的人就像是人类发展当中的干细胞，是不同结果都有可能发生的多潜能性时刻。
It would be better to derive human stem cell lines from the body's mature cells, he said, a method that researchers are still working on.
由身体成熟细胞培养为人类胚胎干细胞会是一个更好的办法，不过研究人员还在努力研究这项技术。
"So it is going to be interesting to see if prions play any role in demyelinating diseases that stem from the brain, " he says.
“如果小蛋白在脑部的其他疾病中都有影响那就更有趣了”，他说。
Embryonic stem cells are the source of every cell, tissue and organ in the body.
身体中的每一个细胞，组织和器官都来源于胚性干细胞。
In monkeys, the stem might not have bound to cells or might have latched on in a manner that did not trigger a response.
在猴子体内，抗体的Fc区域可能并不会黏附在细胞上，或是即使黏附在细胞上也无法启动免疫反应。
Spermatogonial stem cells (SSCs) are the only stem cells in the body that transmit genetic information to the next generation.
精原干细胞是机体内唯一一个能传递遗传信息至下一代的干细胞。
But a modified approach that does not involve viruses is likely to be the ultimate way of making human stem cells.
一种改良的没有病毒参与的方法可能是制造人体干细胞的最终方式。
Adipose stem cells have been used in numerous centers for cosmetic and reconstructive applications in humans, March said.
脂肪干细胞已经在很多中心被用于人类美容和整形中。
The stem of everyone eager, the sweat bedewed clothes, flow full ZHANG ZHANG's smiling face, hope the whose on the faces is all red all.
大家干得可起劲了，汗水沾湿了衣服，流满了张张笑脸，望望谁的脸上都是红通通的。
The allied air strikes against Libya are presenting a new challenge for the Bank of Japan in its efforts to stem the rise of the yen.
多国部队对利比亚的空中打击，正在对日本央行（BankofJapan）阻止日圆升值的努力构成新的挑战。
For all the innovation of the past decade, nobody had been able to stem the flow of money out of the business.
尽管在过去的10年里进行了种种创新，但没有人能够阻止资金源源不断地流出音乐行业。
Oddly enough, it was one that most Americans support: it would have expanded federal funding for embryonic stem-cell research.
说也奇怪，这是一项大多数美国人都支持的法案——加大联邦政府对胚胎干细胞研究的资助。
He said authorities would collaborate with other jurisdictions to stem the flow of drugs at the source.
李明逵又表示，警方会与外地执法部门加强合作，从源头上堵截毒品。
Straight ahead of her, as though it were a rose on a stem .
在她躯干的前方，宛如一朵玫瑰缀在长长的枝条上。
He observed that, at night, a plant's leaves drooped next to the sides of the stem but in the morning they rose as if to worship the sun.
他发现，植物的叶子在夜间低垂于茎干的两侧，但到了早晨，这些叶子又升直了“身板”，似乎在向冉冉升起的太阳崇拜致意。
Professor Lovell-Badge, however, said the Chinese paper did not prove that the eggs that gave rise to babies came from the stem cells.
然而路夫.巴德教授说这篇论文不能证实那些能够繁殖小老鼠的卵子来自于干细胞。
We believe that if you can't stem the bleeding, you risk losing up to 4% of your market share within the next six to 12 months.
我们相信如果你不能悬崖勒马的话，在未来的六到十二个月中面临丧失近4%市场份额的风险。
The reason embryonic stem cells are valued by scientists is that the cells' descendants can turn into any other sort of body cell.
科学家们认为胚胎干细胞有价值是因为，胚胎干细胞可以发育成为任何其他种类的体细胞。
Marban said he made the discovery accidentally while trying to reproduce cardiac stem cells.
马班说，他在试图繁殖心脏干细胞时意外发现这个结果。
Even through the twilight they could see that clinging to its stem against the wall was the long ivy leaf.
即使透过暮光他们也能看到那片长长的常青藤叶子，靠着砖墙，仅仅抱住梗茎。
"The apple fell because its stem would no longer hold it to its branch, " was his first thought.
“因为苹果的蒂已经不能使苹果继续挂在树枝上，所以它掉下来了。”这是他最初的想法。
Don't eat the stem of a mushroom.
不要吃蘑菇的梗。
He dissevered branches from the stem.
他从树干上砍下许多树枝。
For years, private financing has been used to create embryonic stem cell lines, mostly from discarded embryos from fertility clinics.
多年来，私人资金已用于制造胚胎干细胞系，绝大多数是从妇产科医院丢弃的胚胎中制造出来的。
If it were only a flower, round and small and sweet, I could pluck it from its stem to set it in your hair.
假如它是一朵花，圆圆小小香香的，我就能从枝上采来戴在你的发上。
In the forests, trees in the wind might be induced stem bending even destroyed, thus affecting the quality and yield of wood.
树木在风压作用下可能被压弯或者直接被毁坏，因而影响木材的质量和产量，给林业造成巨大的经济损失。
But the general thinking seems to be that cancer stem cells represent a small population of the cells in a tumor.
但是一般想法仿佛如此：癌症干细胞只占肿瘤细胞很小一部分。
This is to take a body cell and order it to turn into a stem cell using a set of molecular instructions.
这种方法靠一系列分子指令将体细胞转化成干细胞。
Aside from transforming plain old human skin into stem cells, the placenta and amniotic fluid seem to have an abundance of these cells.
除了改变普通人类皮肤成干细胞，胎盘和羊水似乎有大量的这种细胞。
Councils are trying to stem the problem by using ductile steel for replacements, which has no scrap value.
市政部门试图通过更换韧钢井盖的办法来解决问题，因为韧钢井盖没有废品价值。
Her team is now testing to see whether stem cells will turn into endothelial cells in the channels and into muscle cells elsewhere.
她的团队正在实验，以测试干细胞是否能变成管腔内的内皮细胞和各处的肌肉细胞。
The beautiful maiden took the flax from her head, wound it round the stem of a slender birch, grasped the spindle, and began to spin.
少女从她头上取下亚麻，将它绕在一根细细的白桦树枝上，抓起纱锭开始纺纱。
You and I share the life of that immortal cell, known to science as the stem cell.
你和我都分享了这个不朽细胞的生命，也就是科学上众所周知的干细胞。
Conceptual, word stem, and soundex searches are possible within the current general framework, but would take quite a bit of work.
概念上，词干和探测法搜索可能已在现有的基本框架之中，但其需要花费很大的工作量。
A counter-terrorism official says it does not stem from the president's anger at having been a target himself.
一位反恐官员表示这一姿态并非源于总统先生对其自身成为恐怖份子目标的愤懑。
Hematopoietic stem cells have been shown to migrate to distant parts of the body in response to injury signals, as have cancer cells.
此外，科学家也发现，造血干细胞会因应受伤的信号，移动到身体较远的其他部位，而癌细胞也会迁移。
Other researchers have been trying to get stem cells from liposuction specimens.
其他研究员则在试图从脂肪抽吸术标本中获取干细胞。
The president said he also signed an executive order calling on federal agencies to explore alternatives to human embryonic stem cells.
布什总统说，他也将签署一个行政命令号召联邦机构去探测人类胚胎干细胞的供选方案。
'Because the stem cells are "off the shelf" and ready to use, it could be a convenient and universal therapy. '
‘因为干细胞从“架子上拿下”就能使用，那可能会是一种方便而且通用的治疗方法。’
If there was a way of extracting the stem cells without destroying them, I would not be opposed to it.
如果有一条可以不毁灭胚胎而提取干细胞的途径，我就不会反对。
However, if I fall in love, if I love the woman at risk of such tragic event, I might as we hunt the lawlessness of the stem, like the lion.
不过，如果我恋爱过，如果我爱的女子遭此惨遇，我也许会象我们这位目无法纪的猎狮人一样干的。
The bicycle wheel includes an air valve stem and a magnet mounted to the air valve stem.
自行车车轮包括气阀杆和安装于气阀杆上的磁铁。
A stem can be defined as a form to which affixes of any kind can be added.
词干的定义是任何词缀可以加于其上的词的主要部分。
