“Champion” 可作名词或动词使用，常见含义包括“冠军”、“捍卫者”或“支持、拥护”。以下是几个典型例句：
名词用法（冠军）：She became the world champion in tennis at the age of 19.
名词用法（捍卫者）：He has long been a champion of environmental protection.
动词用法（支持）：The senator championed the new education bill.
日常表达：Our school team is training hard to be the champion this year.
比喻用法：She is a true champion for women's rights in our community.