Animal migration, however it is defined, is far more than just the movement of animals.

无论如何定义，动物迁徙都远远不止是动物的移动。

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However, it is very hard to demonstrate causes using non-experimental data such as this.

然而，使用诸如此类的非实验数据来证明原因是非常困难的。

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However,it is not that simple. Randy Frost is a psychologist at Smith College in the American state of Massachusetts.

VOA: special.2011.02.22

However, the thing to remember is, when you look at heats of reaction under those conditions it's all well and good.

相反，需要记住，当你需要知道反应中放出的热量时,这些量是很有用的。

麻省理工公开课 - 热力学与动力学课程节选

It's a transition, an evaluation of marriage that is not at all an easy one, however. There are debates.

这是一种转变，对婚姻的评价,那并不是一个简单的转变，当时也有争论。

耶鲁公开课 - 弥尔顿课程节选

However it is noted that the detainee attempted suicide twice before being taken into custody.

BBC: Israel clears jail staff in Prisoner X suicide

However it is impossible to guess whether such efforts will pull Michigan out of the mire.

ECONOMIST: Michigan

Overtime however it is going to be increasingly difficult for Omega to find themes for these watches.

FORBES: Connect