frothing ['frɒθɪŋ]

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附加级

n.起泡，发泡v.（使）起泡沫( froth的现在分词 )

The water is frothing at his feet. 水在他的脚下泛起泡沫。来自辞典例句
The horse was frothing at the mouth after its fast run. 马飞奔过后嘴边满是白沫。来自互联网