【俚语】

Do's and don’ts 规则；注意事项

Before you begin your first day working for us, there are a few important do's and don'ts that I need you to be familar with.
在开始为我们工作之前，我需要让你了解一些重要的注意事项。

What's done is done 事已至此

【例句】

It's too late to change it now. What's done is done.
现在已经来不及改了。事已至此。

Make do 凑合；将就

【例句】

I really need a large frying pan but if you haven’t got one I’ll have to make do with that small one.
我实在是需要一个大煎锅，但如果你没有，我就用那个小煎锅凑合一下吧。

Do the trick 奏效，起作用

【例句】

The recipe calls for pancetta /pænˈtʃetə/, but I think this regular bacon should do the trick.
菜谱说需要用意大利咸肉，但我感觉这个常规的熏肉也行。

Do a double take
因诧异再认真看了一下

【例句】

Everyone did a double take at his shiny new sports car as he drove by.
在他开车经过的时候，大家都多看了几眼他的闪亮的新跑车。