趁他在打电话，每人缴50元来庆祝他的生日。

来源：百度知道 编辑：UC知道 时间：2024/06/25 19:47:37
翻译一下

while he is having a call, let's hand in 50 yuan per person to celebrate his birthday.

He's on the phone.他在打电话
We congratulated him on his birthday.我们向他庆祝生日
per person 每人

Everybody hands in 50 yuan to give him a birthday surprise while he is making a phone call.