But by the time we finish the end of that line, we are really right in the middle of very regular iambic pentameter.

但当我们读完这一行的时候，我们才真正进入了正常的抑扬格五步格诗。

耶鲁公开课 - 现代诗歌课程节选

I don't know if it's possible to finish this by the end of today.

我不知道我们能不能在今天之内把这件事做完。

I don't know 课堂 - SpeakingMax英语口语达人

it's clear that you want to add a vector that looks like that, because then you go from the start of this to the finish of that, you end up at the same point and you get this invisible 0 vector.

显然应该给它加上这样一个矢量,因为从这个矢量的起点指向那个矢量的终点,最终指向的是同一个点,你就得到这个不可见的零矢量

耶鲁公开课 - 基础物理课程节选