assiduously
adv. 刻苦地;勤勉地
例句
Playing the game too assiduously can have a cost too.
但是,一个劲儿地玩这个游戏也可能会付出代价。
He cultivates backbench MPs and activists assiduously.
他不辞辛劳地培养下院议员和其他活动分子。
They Labour assiduously for the benefit of future generations.
他们为造福于后代而勤奋地劳动。