方小字

1. Behind the Times：过时

例句：One will fall behind the times if one does not acquire new knowledge.

一个人如果不学习新知识，那他将落后于时代。

2. Teach Fish to Swim：班门弄斧

例句：You're just offering to teach fish to swim.

你這是在班门弄斧。

3. Got Your Number：知道你打的什么算盘

例句：I've got your number you're never going to pay me back.

我知道你打的什么算盘——你根本不打算还我钱。