The milk has gone bad.

牛奶变坏了。

This milk has gone bad and can't be drunk.

这牛奶变质了，不能喝了。

Can you smell that this meat has gone bad?

你闻到这肉变质的味道了吗？

You should discard any food that has gone bad.

你应该丢弃任何变质的食物。

These vegetables have gone bad, throw them away.

这些蔬菜已经变质了，扔掉吧。

This bottle of milk tastes wrong with it, it might have gone bad.

这瓶牛奶有怪味，可能已经变质了。

When our lungs have gone bad, we realize that we need to stop smoking.

当我们的肺变差时，我们意识到我们需要戒烟了。

The egg has gone bad.

这个鸡蛋已经坏了。

The food has gone bad.

食物已经变坏了。

The pizza has gone bad.

那块烤馅饼已经变坏。