Definition
To have a mass of small bubbles appear from the mouth, typically as a result of a disease or medical condition.
（因疾病）口吐泡沫。
She lay on the floor, writhing and frothing at the mouth.
她躺在地上，痛苦地扭动着，口吐白沫。
The dog was frothing at the mouth, appearing as if it had rabies.
那只狗口吐白沫，看起来好像得了狂犬病。
He was frothing at the mouth and was clearly having a seizure.
他口吐白沫，很明显是在癫痫发作。
- informal
To be in a state of extreme anger or fury.
怒不可遏
The announcement will have the usual crowd frothing at the mouth with anger.
这个公告会让那群人像往常一样气得暴跳如雷。
The notion of a single company dominating the market has many legislators frothing at the mouth and threatening immediate legal action.
一家公司垄断市场的想法让许多立法者怒不可遏，并威胁要立即采取法律行动。
I think they were expecting me to be frothing at the mouth with rage.
我想他们是期待我会气得暴跳如雷。