We get useful materials from it.

我们从中得到有用的材料。

youdao

We can make useful materials out of rubbish.

我们可以从垃圾中提取有用的资料。

youdao

Reading always gives me many useful materials to finish my writing.

阅读总是给予我很多有用的材料来先完成我的写作。

youdao

But before telling you about this let me sort of Go through some of the hypothesis that we have and That we are now testing about why the subject is Difficult and why these materials assembled what We have assembled them might be useful.

但是谈那之前我要说说,我们之前的一些假设,我们现在正在测试为什么这个学科很难,以及为什么我们整合这些资料是有用的,我们认为把它们整合起来或许有用。

麻省理工公开课 - 媒体、教育、市场课程节选

Nepal says that the rebels are destroying water systems, telecoms equipment and other useful materials.

ECONOMIST: Nepal's rebels are to blame

And this group of organisms have already produced a lot of antibiotics but we've barely begun to look at whether they've got useful materials in them.

BBC: Lichen in Wales could hold key to antibiotics resistance

Unfortunately, these chains come in several varieties, and making useful materials from them requires that the amount of each variety in the mixture be controlled, as the properties of the resulting material depend on the proportions of its components.

ECONOMIST: Evanescent or evergreen?