crusade
noun uk/kruːˈseɪd/ us/kruːˈseɪd/
[ C ]（为理想或信念而奋斗的）运动
a long and determined attempt to achieve something that you believe in strongly
They have long been involved in a crusade for racial equality. 他们长期以来一直致力于争取种族平等的运动。
a moral crusade against drugs 反毒品的正义运动
[ C often plural ] (also Crusade)十字军东征
one of the religious wars (= crusades) fought by Christians, mostly against Muslims in Palestine, in the 11th, 12th, 13th, and 17th centuries
crusade
verb [ I ] uk/kruːˈseɪd/ us/kruːˈseɪd/
从事某运动;为达到某理想而奋斗
to make an effort to achieve something that you believe in strongly
She crusaded against sex and violence on television. 她致力于反对电视节目中的色情和暴力。