There was a powerful smell of stale beer.

有一股浓烈的馊啤酒的气味。

《柯林斯英汉双解大词典》

He was aware of the stink of stale beer on his breath.

他注意到自己有变味啤酒般的口臭。

《柯林斯英汉双解大词典》

It tastes like sweet beer. Sweet stale beer.

尝起来像甜啤酒。过期甜啤酒的味道。

youdao

Hours after the shooting at the Leopold Cafe, a cult city cafe and a favourite hangout of foreigners and locals alike, the place smelt of stale beer and bleaching powder.

BBC: Mumbai attackers create 'killing zone'

Some locals are lamenting the loss of its rough-as-guts decor and ambiance, while others are relieved that its bar-room brawls, sticky floors and ever-present aroma of stale beer are things of the past.

BBC: Sydney��s bohemian heartland

In 18th-century London, instead of dumping old, sour beer, publicans would top off stale kegs with a fresh delivery.

WSJ: Porters Get Fresh | Half Full