No, no, " said the little pink rose, "you cannot come in. "

“不，不，”粉红的小玫瑰连连说，“你不能进来。”

youdao

But somehow we believe that if you destroy energy, it must come out in some other form, and you cannot create energy out of nothing.

但我们却相信，你若是损耗了动能，它肯定转化为某种形式，能量并非无中生有的。

youdao

That’s nice if you wanted to make the subject a silhouette but in most cases that is not nice if the subject looks and says, “how come I cannot see me”.

如果你打算要把拍摄主体拍成剪影那也不错，但多半拍摄对象会看着照片问，我怎么看不清自己。

youdao

But once in a while, you know, you will come up with a reason that I just cannot argue with.

但有时候呢,你们确实会想出一些我无法辩驳的理由

耶鲁公开课 - 基础物理课程节选

In an uncertain world you simply cannot come close to imagining what a perfect job might be.

FORBES: How To Plan Your Life, When You Can't Plan Your Life