foam at the mouth

The mad dog was foaming at the mouth.

疯狗口吐白沫。

He looked like a madman, foaming at the mouth.

他口吐白沫, 看上去像个疯子。

He is foaming at the mouth about the committee's decision.

他正为委员会的定大发其火。

He stood there foaming at the mouth. I’ve never seen anybody so angry.

他站在那儿大发雷霆，我还从没见过有人生这么大气的。