!diligent的名词形式是diligence,n. 勤奋,用功公共马车

Diligence is the Mother of Good Luck.勤奋是好运之母。

He exhorted his companions, "Try to accomplish your aim with diligence."他勉励他的同志,“尝试以勤奋来实现目标。”

Little by little his diligence was rewarded.