1
tireless in [doing sth]
表示在某个方面不知疲倦。
She was tireless in her efforts to help the homeless.
她孜孜不倦地帮助无家可归者。
不知疲倦的；不倦的；坚持不懈的
先理解核心含义，再看它在真实句子里的用法。
不知疲倦的；不倦的；坚持不懈的
untiring; indefatigable
She was tireless in her efforts to help the homeless.
她孜孜不倦地帮助无家可归者。
不知疲倦的；不向疲劳屈服的。
Indefatigable, untiring and not yielding to fatigue
持续热情,活力不减
showing sustained enthusiastic action with unflagging vitality
勤奋不懈,持之以恒
characterized by hard work and perseverance
Despite working all day, she remained tireless and kept helping others.
尽管工作了一整天，她仍然不知疲倦，继续帮助别人。
AI contextual example
The tireless volunteers cleaned the whole park before noon.
不知疲倦的志愿者们在中午之前把整个公园打扫干净了。
AI contextual example
His tireless efforts finally paid off when the project was completed.
他的不懈努力最终得到了回报，项目完成了。
AI contextual example
a tireless worker
不知疲倦的工人。
WordNet
表示在某个方面不知疲倦。
She was tireless in her efforts to help the homeless.
她孜孜不倦地帮助无家可归者。
用作定语修饰名词。
He is a tireless advocate for environmental protection.
他是一个为环境保护不懈奋斗的倡导者。
用于系表结构。
Despite the long hours, she remained tireless.
尽管长时间工作，她仍然不知疲倦。
Not this
She studies tireless for the exam.
Use this
She studies tirelessly for the exam.
“Tireless”是形容词，不能修饰动词；应使用副词“tirelessly”来修饰“studies”。
Not this
After working all day, he is tireless.
Use this
After working all day, he is energetic.
“Tireless”描述的是“从不疲倦的”持久特性，而非暂时状态；表示“不累”时应使用“energetic”或“not tired”。
Focus on the distinctions below. Other candidates are kept compact until a reliable usage note is available.
不知疲倦的工作者
She was known as a tireless worker who always stayed late.
她以不知疲倦的工作者著称，总是工作到很晚。
不懈的努力
Thanks to his tireless efforts, the project was completed on time.
多亏了他的不懈努力，项目按时完成了。
不懈的倡导者
He is a tireless advocate for environmental protection.
他是环境保护的不懈倡导者。
不懈的追求
Her tireless pursuit of excellence inspired everyone around her.
她对卓越的不懈追求激励了周围的每一个人。
不知疲倦的奉献
The volunteers showed tireless dedication throughout the crisis.
在整个危机期间，志愿者们表现出不知疲倦的奉献精神。
不知疲倦的工作者
She is a tireless worker who always goes the extra mile.
她是一个不知疲倦的工作者，总是格外努力。
不懈的倡导者
He has been a tireless advocate for children's rights.
他一直是儿童权利的不懈倡导者。
不懈的努力
Thanks to their tireless efforts, the project was completed on time.
多亏了他们不懈的努力，项目按时完成了。
Use tireless naturally, then get feedback on meaning, tone, grammar, and phrasing.
Revisit a common error or keep this word in your review list.
tire（疲劳）+less（无）→ 不知疲倦；想象一个永不停歇的工人，毫无疲态。
语域：formal 常见场景：正式演讲或书面报道、正面评价与表彰 该词比较常见于正式或书面语境，如演讲、新闻报道或书面评价，通常用来赞扬某人坚持不懈、不知疲倦。口语中较少使用，用中性词如 hardworking 更自然。
与 tireless /ˈtaɪɝləs/ 押韵的常见词是 wireless /ˈwaɪɝləs/。其他以 -less 结尾的词如 relentless、careless、hopeless、useless 拼写相似，但元音不同，不押韵。
Dictionary facts from ECDICT, WIKTIONARY.