The mechanics work hard to keep the helicopters airworthy.

机修工们为了保障直升机的适航性而努力工作着。

《柯林斯英汉双解大词典》

Now I have to work very hard next semester to keep my scholarship.

现在我下学期必须非常努力工作，以保持拿奖学金。

youdao

During the past generation, the American middle-class family that once could count on hard work and fair play to keep itself financially secure has been transformed by economic risk and new realities.

在过去的几十年里，美国的中产阶级家庭曾经依靠努力工作和公平竞争来保证自己的财务安全，但现在的经济风险和新出现的情况已经改变了这种状况。

youdao

The young people here are hard at play, and the Muslim elders are hard at work trying to keep them engaged in positive activities.

VOA: standard.2009.12.20

In fact, if the other person is working hard, or is cutting back on their carbon emissions, you have every bit more incentive to not work hard or to keep high carbon emissions yourself.

实际上,如果其他人正在努力工作,或者正在尽量减少碳排量,你总会有想偷懒的动机,或者总是继续大量排碳

耶鲁公开课 - 博弈论课程节选

And they are extremely proud of what they're doing. But all of us volunteers,workforce, everybody involved has to keep their eye on the ball, work hard right to the end.

VOA: standard.2010.02.21

He was the kind of person who wanted to keep focused and work very hard.

BBC: Kwame Ofosu-Asare's father: He was a "sacrificial lamb"

Well done everyone - keep up the hard work until the deadline.

BBC: School Report Shout Out Wall

The final point is that De Backer decided to keep touring and to work hard on the live show, and it shows.

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