A foster mother is a mother who takes someone else's child into her family and cares for the child for a period of time just as what she would do to her own child.

养母是指把别人的孩子带到自己家里，像照顾自己的孩子一样照顾他一段时间的母亲。

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After training for a period of time, the researchers tested the bees.

经过一段时间的训练后，研究人员对这些蜜蜂进行了测试。

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Tribes would stop fighting for a period of time if they found a tree with mistletoe.

如果他们发现一棵树上有槲寄生，部落会停止一段时间的战斗。

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Others who want to graduate in three years must pay for the same education as four-year students, but in a shorter period of time.

VOA: special.2009.07.23

My watch was dissembled for a period of time, perhaps we should say my watch didn't exist during that period of time.

我的手表在修理的时候消失了，我们或许该说我的手表,在修理的那段时间，并不存在。

耶鲁公开课 - 死亡课程节选

Being a person is something you can go through for a period of time and cease to be.

作为人的存在是可以经历一段时间然后停止的。

耶鲁公开课 - 死亡课程节选

They will also be dismissed from their jobs for a period of time .

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It's an EKG that you wear for a period of time, in this case about 34 hours.

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"Everybody loves to have those songs that consume their lives for a period of time, " said M.

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