The hard work of this grassroots effort resulted in the first Earth Day on April twenty-second, nineteen seventy.

VOA: special.2010.04.21

Somebody starts out poor and makes his way through hard work and dedication and effort to riches and success.

他白手起家,通过努力工作,奋发图强，最终得到荣华富贵。

耶鲁公开课 - 死亡课程节选

The general described the effort as "hard work." Several civilian experts General McChrystal invited to help with an assessment of the situation have said they recommended he ask for more U.S.troops.

VOA: standard.2009.08.11