Europe's oil use is going down. But on the other hand when it comes to security in the Gulf, the United States is the only country from outside the Gulf that can provide security for the Gulf in a comprehensive way.

VOA: standard.2010.06.29

You know, frankly, when it comes down to it, people want to give money and get something in return.

坦率地说，归根结底一句话，人们在有所投入的时候也是期待有所回报的。

不平等的赞助入学 - SpeakingMax英语口语达人

When it comes to the dangers that I might have faced when it came to going down a more destructive path.

当我在书中谈到我可能遇到的危险时,当我谈到走上一条更具毁灭性的道路时。

普林斯顿公开课 - 人性课程节选

When it breaks this bond, that chlorine atom, a free chlorine atom comes down and reacts, this is ozone, with the ozone in the upper atmosphere.

当它打破这个化学键，氯原子，一个自由的氯原子下来,和在大气层的上方的臭氧反应，这就是臭氧，在大气上层有臭氧。

麻省理工公开课 - 固态化学导论课程节选

Well, we say at the top of the loop, when it goes up and comes down the velocity is 0.

在曲线顶端,当物体上升,然后速度为0时候

耶鲁公开课 - 基础物理课程节选

When an action potential comes down this pre-synaptic axon, when it reaches this point here, it sets off the process of these vesicles dumping their content into the synaptic cleft.

当动作电位到达轴突的突触前膜时,当到达这一点时 小泡就将其内含物,排放到突触间隙中去

耶鲁公开课 - 生物医学工程探索课程节选