要理解年金的内涵很难，想选到一款适合的年金更难。

They can be a nightmare to understand, even harder to shop for.

youdao

年纪小的孩子们恐怕不会理解吃苦在前享乐在后的观念，所以他们常常会好奇为什么家里不买第二辆汽车或者度假的时候为什么不选一个更好的目的地。

THE MOST TOYS Younger children, however, may not grasp the idea of delayed gratification when asking why the family doesn’t have a second car or take nicer vacations.

youdao

电影要选你比较能够理解的。

Choose movies that you are more likely to be able to follow.

youdao

OK, important -- if you are part of this group here think about it and make sure you understand that.

好的，这很重要，如果刚才你选了可逆过程,请好好想想并且保证已经理解了这个问题。

麻省理工公开课 - 热力学与动力学课程节选