傷んでるよ

it's gone bad

→ 傷む
phrase Rare #27,037
it's gone bad A casual way to say that food has spoiled. 傷んでる is a shortened form of 傷んでいる, and よ adds emphasis or presents the information to the listener.
JA: この牛乳、傷んでるよ。
EN: This milk has gone bad.

あのバナナ、傷んでるよ。

That banana has gone bad.

このオレンジ、傷んでるよ。

This orange has gone bad.

そのお肉、傷んでるよ。

That meat has gone bad.

このリンゴ、傷んでるよ。

This apple has gone bad.

このバナナ、傷んでるよ。

This banana has gone bad.

牛乳が傷んでるよ。

The milk has gone bad.