68. It's a deal.
一言为定。

用法透视
这句话的含义和用法与汉语的"一言为定"相同。

支持范例
1. It's a deal. I'll pick you up tomorrow morning.
一言为定。我明早来接你。
2. You can use my car this weekend. It's a deal.
你周末可以用我的车。一言为定。
3. I'll let you know as soon as she comes back. It's a deal.
她一回来我就告诉你。一言为定。

会话记忆
A: How about a game of tennis?
来比一场网球如何？
B: Okay. Loser has to take out the trash for a month.
好哇！输的人罚倒垃圾一个月。
A: It's a deal.
一言为定。
B: See you in the court.
咱们球场上见