If he splits his head open and there's blood everywhere, I'm less likely to laugh unless I don't like him or something.

如果他摔个头破血流，我就笑不出，除非我很讨厌这个人。

耶鲁公开课 - 心理学导论课程节选

You can't even offer a sacrifice unless you're already ritually pure, because you couldn't get into the sanctuary to offer your sacrifice if you weren't ritually pure.

如果仪式上不纯洁，你甚至不能献祭，因为如果你仪式上不纯洁，你将无法走进圣所,去贡献祭品。

耶鲁公开课 - 旧约导论课程节选

In 1988, we asked people in Los Angeles, are you worried that unless I buy now I won't be able to afford a house in the future?

如果在1988年问洛杉矶居民,你担不担心,如果现在不买房,以后恐怕会买不起

耶鲁公开课 - 金融市场课程节选

So it's OK to not specify. I want to point out, pz whether you're in the p x, the p y, or the p z, unless a question specifically m asks you to specify the m sub l, which occasionally will happen, but if it doesn't happen you just write it like this.

我想指出的是，无论你在px，py或，除非一个问题特别地,让你指出l下面的，这种情况有时会发生，这样就可以了,但是如果它不做要求你们写成。

麻省理工公开课 - 化学原理课程节选