crusade

1. N-COUNT A crusade is a long and determined attempt to achieve something for a cause that you feel strongly about. (長期而堅定的) 努力奮鬭

He made it his crusade to teach children to love books. 他把教育孩子熱愛書籍作爲自己的奮鬭目標。

2. V-I If you crusade for a particular cause, you make a long and determined effort to achieve something for it. (爲推進某一事業而) 奮鬭

...a newspaper that has crusaded against the country's cocaine traffickers. …一份致力於打擊本國可卡因走私犯的報紙。