Young children being raised bilingual have to follow social cues to figure out which language to use with which person and in what setting.

从小在双语环境下长大的孩子必须关注社交线索，以弄明白在什么环境下与什么人交流该使用哪种语言。

youdao

On the user interface the user can select which language to use.

在用户界面上，用户可以选择使用何种语言。

youdao

The second parameter to createQuery() specifies the query language to use.

createQuery() 的第二个参数指定所使用的查询语言。

youdao

He also says non-native speakers generally use too much emotional language and give too many details before getting to the main idea.

VOA: special.2009.04.30

The sounds of sense are all part of language in use, which people are using to do things with.

理性的声音是蕴含在所有的在运用的语言中，人们这样来处理事情。

耶鲁公开课 - 现代诗歌课程节选

I don't know a unit of language which I use to communicate with you positively.

我不是主动地知道,交际用的语言单位。

耶鲁公开课 - 文学理论导论课程节选

But unlike joining the euro and having to give up your currency, you need not give up your own language to use English.

ECONOMIST: South Korea's debt

It is not, he says, because they share some affinity with the U.K. or U.S. but because English is the most convenient language to use.

FORBES: The Dollar Is Like The English Language

Colleges aren't required to use uniform language to describe their financial-aid packages.

WSJ: Making Sense of College Aid