Milk will go bad if it is kept for a long time, especially if it is not kept cold.

鲜奶在保存了很长一段时间之后就很容易变质，特别是没有在低温下保存的时候。

youdao

This piece of meat has been kept for a long time, as if it has gone bad.

这块肉放了好长时间了，好象坏了。

youdao

This piece of meat has been kept for a long time, as if it has gone bad.

这块肉放了好长时间了，好象坏了。

youdao