实用口语：chip in 大家一起凑钱

Chip in 出钱

e.g. They all chipped in to help him pay for his medical bill.  他们所有人都出钱一起帮他付医疗费用。

e.g. It was so sweet. All my friends chipped in to buy me a car for my birthday.  真的太贴心啦～我所有的朋友一起抽签给我买了一台车作为生日礼物。