untiring

形容词 untiring:

1. characterized by hard work and perseverance
   同义词：hardworking, industrious, tireless

1. Not flagging; untiring.
   不松懈的; 不倦的
2. He is an untiring campaigner for peace.
   他为了争取和平不懈努力。
3. She is untiring in her efforts to help the homeless.
   她帮助无家可归的人从不厌倦。