tireless

形容词

1. 1

   不屈不挠的、坚持不懈的、不懈的多用于褒义

   She was a tireless advocate for children's rights in rural areas.

   她为偏乡儿童的权益不屈不挠地奔走。

2. 2

   不知疲倦的、精力充沛的

   The tireless volunteers kept working long after sunset.

   那些不知疲倦的志工在日落后还持续工作许久。