四要坚持求真务实，真抓实干，深入基层、深入群众开展调查研究，及时发现新情况，解决新问题。

Fourth, we must adhere to a down-to-earth working style, stay close to the grassroots to conduct research and learn new situations and solve new problems.

youdao

学生通常要选四门或五门高级证书辅助考试学科。

Students will normally take four or five AS subjects.

《牛津词典》

她在这出戏里要换四次服装。

She has four costume changes during the play.

《牛津词典》

But, the reaction says I need twice as much mag as tickle if this reaction is going to go to completion.

但是这个反应告诉我们,镁的量应该是四氯化钛的两倍,如果要反应完全的话。

麻省理工公开课 - 固态化学导论课程节选

When I was commuting between Limoges and Paris, that was still a long trip then, there was no TGV; it was about four hours.

如果我在里摩日和巴黎之间通勤,这依旧是段漫长的旅途,这儿没有法国高铁,大概要用四小时

耶鲁公开课 - 1871年后的法国课程节选

It varies with the square of distance so it goes - in order to go twice as far it takes four times as long.

速度是与距离的平方正相关的--,如果要扩散两倍的距离要多花四倍的时间

耶鲁公开课 - 生物医学工程探索课程节选