Beer froths when it is poured out .

啤酒倒出来时会起泡沫。

His mouth froths , and the froth is the word .

他正满嘴唾沫，那唾沫便是那个字了。

Pros : very powerful - froths milk , grinds flax seeds and crushes ice .

优点：马力强劲-打奶泡，磨碎亚麻种子及搅碎冰块。