Diligence: Work hard, down-to-earth, do not fear difficulties, and persistent.

勤勉：勤奋努力，脚踏实地，不避艰辛，锲而不舍。

youdao

Character, optimistic, cheerful, broad interests, work hard, down to earth, the courage to meet new challenges.

性格乐观开朗、兴趣广泛、勤奋好学、脚踏实地，勇于迎接新挑战。

youdao

To be successful, a person in business works hard and tries to get down to brass tacks.

VOA: special.2010.05.16

Just come in and settle down, because it's very hard to lecture with this amount of traffic.

进来以后就赶紧坐下来,你们这样乱糟糟的我讲不下去

耶鲁公开课 - 基础物理课程节选

It's not that hard, and in particular, notice that all I'm doing here is writing down notation.

这没有你想象的那么难,我只不过写下了一些符号

耶鲁公开课 - 博弈论课程节选

Professionally, we have the work hard concept down cold.

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Torrents are scattered, diverse and hard to pin down, and that makes them incredibly hard to stop.

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By midmorning Thursday, the snow was coming down so hard that Kansas City International Airport shut down.

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