everybody and his cousin
几乎每个人都参与其中
口语·形容很多人参与
英文释义
referring to a large number of people or a wide variety of individuals
例句
Everybody and his cousin showed up at the party last night.
典故来源
源自美国口语，夸张地表示不仅本人，连亲戚都来了，形容人数众多。