tire·less
adjective/ˈtaɪələs/
/ˈtaɪərləs/
(approving)- putting a lot of hard work and energy into something over a long period of time
不知疲倦的；不觉疲劳的；精力充沛的 - a tireless campaigner for human rights
不屈不挠的人权运动参与者 - to have tireless energy
拥有孜孜不倦的精力 - She was tireless in her efforts on our behalf.
她为我们不懈地努力。
Oxford Collocations DictionaryTireless is used with these nouns:- advocate
- campaigner
- effort
- …
- a tireless campaigner for human rights