have a hand in sth 参与某事物

Hello, 各位亲爱的朋友大家好，今天和大家分享的是：

have a hand in sth 参与某事物

A: That man wrote twenty-five books last year.

B: He also had a hand in writing for two magazines. He's incredible.

(A: 那个人去年写了廿五本书。)

(B: 他也参与撰写两本杂志。他真是不可思议。)