"seal the deal" in Chinese (Simplified)
达成协议成交
Definition
在协商或讨论后，使协议正式达成。
Usage Notes (Chinese (Simplified))
属于口语表达，多用于商业、销售谈判等场合。例如：“终于谈成了这笔买卖”。也可用于非正式场合表达达成共识。
Examples
We need everyone's signature to seal the deal.
我们需要大家的签名才能**达成协议**。
They shook hands to seal the deal.
他们握手以**达成协议**。
The boss asked, 'Are we ready to seal the deal?'
老板问：“我们准备好**达成交易**了吗？”
After months of talks, they finally sealed the deal over dinner.
谈了几个月后，他们终于在晚餐时**达成了协议**。
He brought in a big client to help us seal the deal.
他带来了一位大客户帮我们**达成协议**。
A little charm goes a long way when you're trying to seal the deal.
要**成交**时，一点点魅力就很有用。