tireless

1. ADJ If you describe someone or their efforts as tireless, you approve of the fact that they put a lot of hard work into something, and refuse to give up or take a rest. 孜孜不倦的[表赞许]

...Mother Teresa's tireless efforts to help the poor. …特雷莎修女为帮助穷人所作的孜孜不倦的努力。

2. tirelesslyADV 孜孜不倦地[ADV with v]

He worked tirelessly for the cause of health and safety. 他为健康和安全事业孜孜不倦地工作。