a bit at a time
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英 
英汉解释
英英解释
例句
Don't try to do everything at once; take it a bit at a time.
不要一次做所有的事情,要一次做一点儿。
If your child gets upset, comb it a bit at a time, but do not leave the oil on for more than 24 hours.
如果孩子感到不安,那每次就只梳一点点。记住:不要让婴儿油保持24小时以上。
Reducing rates a bit at a time, it keeps cutting until the economy turns around.
一次降一点,一直降到经济反转为止。