v.(使)起泡沫( froth的过去式和过去分词 );
例句:
The beer frothed as it was poured out.
啤酒倒出来时泛起泡沫.
The water frothed as it tumbled down the rocks.
水冲击在岩石上溅起了泡沫.
The lemonade frothed up.
柠檬水嘶嘶直起泡.