crusader
🇺🇸
/kruːˈseɪdər/
🇬🇧
/kruːˈseɪdə(r)/
A person who fights for a cause they believe in.
She was a crusader for environmental protection.
她是一位环保的斗士。
A medieval soldier who fought in the Crusades.
The crusader was a brave knight.
那位十字军战士是一位勇敢的骑士。