Subject：Stop your shooting your mouth off.
迷你对话
A: Stop shooting your mouth off. Quickly, please. The library will be closed in a minute.
不要唠叨个没完，快点。图书馆马上就要关门了。
B: OK. I have decided to borrow this book.
好的，我觉得接这本书了。
地道表达
shoot one’s mouth off
1. 解释
Shoot是“开枪”的意思。Shoot one’s mouth off就是形容一个人的嘴巴像一把上了子弹的机关枪，一时难以停下来。所以这个短语的引申义就是一个人为了给在场的人留下深刻印象而说一些本不应该说的话，而且唠叨个没完，使别人很反感。其英文解释为：talk too much, especially about something you should not talk about。
2. 例句
e.g. Don't pay any attention to Bob. He's always shooting his mouth off.
别理Bob，他总是唠叨个没完。
e.g. Oh, Sally! Stop shooting off your mouth! You don't know what you're talking about.
Sally, 闭嘴了！你知道你在说什么吗？
e.g. Don't go shooting your mouth off about how much money you're earning.
别在不停地说你现在挣多少钱了。
