对一位项目主管来说的最困难的问题之一是要知道多少功能才够。

One of the most difficult problems facing a project leader is to know how much functionality is enough.

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例如，汽车制造商需要知道多少车应漆成红色，多少车应漆成绿色，还有多少车应漆成黑色。

For example, and automobile manufacturer needs to know how many cars to paint red, how many green, and how many black.

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你们都需要知道自己在做什么，谁向联名账户支付了什么，以及你们各自有多少存款。

You both need to know what you're doing, who's paying what into the joint account and how much you keep separately.

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Obviously we don't expect you to know exactly what the distances are, but you should be able to compare them relatively.

当然我们不要求你么,要能知道具体这些位置是多少，但你们要能够相对比较它们。

麻省理工公开课 - 化学原理课程节选

I just want to know the bottom line; how much do I have to pay for the whole company?

我只想知道底价,也就是买下整个公司最少要花多少钱

耶鲁公开课 - 金融市场课程节选

All we have to figure out is how many nodes we're dealing with and then we can get the general shape of the graph here.

我们要知道的就是有多少个节点,然后我们就能得到图的大致形状了。

麻省理工公开课 - 化学原理课程节选