Rule for taking derivatives, if you want to do this mindless application of calculus, you can do it.

按求导法则来做,如果你想解决这个微积分的简单应用,你可以很容易做到

耶鲁公开课 - 基础物理课程节选

You use "I can't help but" when you feel helpless, when you want to get something across that needs to happen.

当你觉得无助时，或者当你说明需要做到这件事情的时候，你就可以使用“I can't help but”句型。

I can't help but 课堂 - SpeakingMax英语口语达人

You know, you can see what's going to happen.

你可以看到这是怎么做到的。

麻省理工公开课 - 计算机科学及编程导论课程节选

All you have to do is mutate the DNA, which is very straightforward to do in molecular biology, and now you can tag absolutely any protein that you're interested in.

你所需要做的就是使DNA变异，这在分子生物学力是很容易做到的，你可以用它标记,任何你感兴趣的蛋白质。

麻省理工公开课 - 化学原理课程节选