Scum yeast
[化] 浮膜酵母
?? 詞語(yǔ)組成解析
scum
[sk?m]
n. 浮渣;泡沫;糟粕;
vi. 產(chǎn)生泡沫;被浮渣覆蓋;
vt. 將浮渣去除掉;
yeast
[jist]
n. 酵母（菌）;酵母粉，酵母餅，酵母片;泡，泡沫;動(dòng)亂，激動(dòng);
vi. 發(fā)酵;起泡沫;
??? 情景例句
What classes are mandatory for your major?
你的專業(yè)什么課是必修的？
Many men have many minds.
人多意見多；人多口雜。
He looked very well though he was rather thirsty, for he drank half a bottle of milk.
它看上去一切正常，只是口渴得很，喝了半瓶牛奶。