crusader
noun [ C ] uk/kruːˈseɪ.dər/ us/kruːˈseɪ.dɚ/
社会运动的斗士
someone who makes a determined effort to achieve or stop something because of their strong beliefs
He caught the public imagination as a crusader against corruption. 他以反腐败的斗士形象引起公众注意。
Synonyms: campaignerfighter (PERSON)
(also Crusader)十字军战士
a Christian who fought in one of the religious wars of the 11th, 12th, 13th, and 17th centuries, mostly against Muslims in Palestine