protector
noun [ C ] uk/prəˈtek.tər/ us/prəˈtek.tɚ/
保护者
someone who protects someone or something
Philip II considered himself the protector of the Catholic Church. 腓力二世将自己看作天主教的保护者。
She has a reputation for being an ardent protector of individuals' liberties. 她是位著名的对个人自由的热情捍卫者。
保护装置，保护物
a piece of equipment that protects someone
a back and chest protector 胸背保护装置