Are you sure you have to go out of town? Oh, yeah, it's a little family thing.

VOA: standard.other

One thing I forgot is if any of you has a cellphone be sure put that number down.

我忘了一件事，如果你们谁有手机,记得把手机号码写下来。

麻省理工公开课 - 电影哲学课程节选

Let's do a little bit of algebra just to make sure we can find this thing.

我们不妨也佐以数学计算验证一下

耶鲁公开课 - 博弈论课程节选

if we do introduce a third possibility-- I'm not sure this is the right thing.

如果确实加入这一种可能-,我不确定这是对的。

耶鲁公开课 - 死亡课程节选

So, using the terminology of chemists, which is a good thing to do, because in this course we are all chemists, we want to make sure that we're not using just the physical description of the numbers, but that we can correlate it to 1 0 0 what we understand as orbitals, and instead of 1, 0, 0, 1s we call this the 1 s orbital.

我们最好学会，利用这些化学术语，因为我们这课,就是关于化学的，我们,不仅要知道，这些数字,的物理描述，还要能把它,和我们知道的轨道联系起来，我们叫它。

麻省理工公开课 - 化学原理课程节选