ain例句

"This ain't no affair of yours, boy!" McClosky said threateningly.
“小子，这不关你的事！”麦克洛斯基威胁道。

I believe in the maxim "if it ain't broke, don't fix it".
我相信这样一条箴言：“不破不修”。

Well, it's obvious, ain't it?
嗯，这很明显，不是吗？

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