useful be useful to的意思|示意

There are others, of course, and some of the fields overlap. But it just goes to show: the math that you'll find useful is pretty different from the math your school thought would be useful.

当然，也有其他的一些因素，某些领域是重复的。也拿来说说吧：你所发现有用的那部分数学，不同于那些你在学校里认为有用的数学。

Make them consider every vice, as shameful and unmanly: fire them with ambition to be useful-make them disdain to be destitute of any useful, or ornamental knowledge or accomplishment.

让他们视每一种缺点为可耻和懦弱：激励他们满怀雄心壮志成为有用之才—使他们鄙视缺乏有用知识的人、毫无造诣的人和无所成就的人；

But it just goes to show: the math that you'll find useful is pretty different from the math your school thought would be useful.

也拿来说说吧，你所发现有用的那部分数学，不同于那些你在学校里认为有用的数学。

It's a place that makes useful men out of boys. Don 't you want to be useful like your brothers?

这是一个能把你从男孩变成有用之人的地方，你不想变得象你的兄长一样，做个真正的男人吗？

They will habitually prefer the useful to the beautiful, and they will require that the beautiful should be useful.

美国人喜欢“实用”的东西胜于“美丽”的东西，甚至他们要求“美丽”也必须实用！

This formula is useful to me, I think to be also one to many persons useful.

这公式对我有用，我想对许多人也是一样有用。