What I mean by that is, pick a simple set of values, and let's walk through it to see what happens. And this is useful because it's going to allow me to A make sure that I've got something that's going to terminate, it's going to let me make sure that in fact I'm doing the right kinds of updates.

原因你们知道的，好，模拟代码,我的意思就是,选出一系列的值来,然后模拟下代码的执行来看看结果,这很有用因为这让我确保我的程序在某个地方,可以终止，还会让我确保实际上我。

麻省理工公开课 - 计算机科学及编程导论课程节选

It depends on" is very useful when you're trying to make a decision when things are unclear and you're waiting.

当你在形势不明朗，仍在观望而无法做决定的时候，"It depends on"句型是一个非常有用的句型。

It depends on 课堂 - SpeakingMax英语口语达人

In that way it would be useful to make a contrast between Aristotle and someone like Adam Smith the great author of The Wealth of Nations.

在这一方面，有用的对比将是,把亚里士多德,与像亚当？史密斯这样人物,放在天秤的两端。

耶鲁公开课 - 政治哲学导论课程节选

It's not enough to understand the biology of how to create a vaccine, if you can't make enough of the vaccine or deliver it to people in ways that it's useful.

仅仅知道疫苗制造的,生物学原理是不够的,还得能生产出足够的疫苗,并在公众中广泛使用

耶鲁公开课 - 生物医学工程探索课程节选

Newton says F = ma, so to make it a useful result of this problem, we know the mass of this guy.

牛顿指出 F = ma,这对于解决这个问题很有用,我们知道这个物体的质量

耶鲁公开课 - 基础物理课程节选

So if you can make 100 tons of the drug but it costs $100,000 a gram that might not be a useful drug because nobody could afford to use it.

虽然你能制造一百吨药,但每克药得十万美元,这药就没什么用,因为没人能用得起它

耶鲁公开课 - 生物医学工程探索课程节选