untiring /ʌnˈtaɪrɪŋ/ TEM4

• 1. 

  ADJ If you describe a person or their efforts as untiring, you approve of them because they continue what they are doing without slowing down or stopping. (人、努力)不知疲倦的 [usu ADJ n] [表赞许]

  例：

  ...an untiring fighter for justice, democracy and tolerance.

  ...一位不知疲倦的为公正，民主和宽容而奋斗的斗士。