我知道您的办公时间在明天，但我想知道您现在是否有几分钟的空余时间来讨论一点事情。

I know your office hours are tomorrow, but I was wondering if you had a few minutes free now to discuss something.

youdao

起初你注意地听着；之后，其他的念头就会进入那段空余的思维时间；然后在没有任何预兆的情况下，完全占据你的整个大脑……“一定别忘记放学后替母亲进城办事”“要是我的自行车修理好了该多好！”

Then other thoughts drift into that spare thinking space. Without warning, they have taken over your mind entirely… "I mustn't forget to go downtown after school for Mother.""If

youdao

在我有空余时间时，我将会编辑最后一个生物竞赛文档。

I will edit the last biology document for contest in my spare time.

youdao

So, I encourage you to do that the next time you have some free time on your hands, maybe at IAP or some time like that.

下次你有空余时间时,我鼓励你去看一看，也许在IAP或者什么时候。

麻省理工公开课 - 化学原理课程节选