n.發(fā)酵劑；酵母；要素；影響力
v.使 ... 發(fā)酵；影響
We often use leaven when baking breads. 烤面包時(shí)，我們經(jīng)常使用發(fā)酵劑。
The leaven of reform was working. 改革的影響力在起作用。
adj.未經(jīng)發(fā)酵的；未經(jīng)感化的；未受激化的
