她勤勤恳恳，一丝不苟。

She's very thorough and conscientious.

弗吉尼娅还在尽力成为一位勤勤恳恳、全心奉献的母亲。

Virginia was still struggling to be a conscientious and dedicated mother.

他勤勤恳恳，埋头苦干。

He industriously engages in unostentatious hard work.

他把自己说成是一个勤勤恳恳、自食其力的小商人，深受冷酷无情、扶强欺弱的官僚机构所害。

He represented himself as a hard-working, self-made small businessman victimized by mindless, bullying bureaucracy.

他全心全意、勤勤恳恳地埋头工作

He sweated away at his work with all his heart.

少量的零售领域CEO也通过了勤勤恳恳的在基础领域做好销售最终坐上了CEO的位置，比如像麦当劳的詹姆斯斯金纳，他一开始只是一个店长；又或者是百思买的CEO杜恩，他一开始只是一个店长助理。

A few retail executives also worked their way to the corner office by way of humble beginnings on the sales floor, like James A. Skinner of McDonald's, who started as a restaurant manager, and Brian J. Dunn of Best Buy Co., who was once a store associate.

他并不聪明，但工作总是勤勤恳恳。

He is not bright, but he always works hard.

我的母亲总是勤勤恳恳，任劳任怨。

My mother works very hard, yet without complaining.

他不十分出色，却是个勤勤恳恳的人。

He's not very good but he's a real trier.

我和妻子都是律师，工作勤勤恳恳。

My wife and I are both lawyers and hard-working.