n.

1. 酵母，酵素；发酵[C][U]
2. （社会等的）动乱，骚动[U][S]
   The country was in ferment.

   那个国家处于动乱中。

vt.

1. 使发酵
   When wine is fermented, it gives off bubbles of gas.

   酒发酵时发出气泡。

2. 酝酿
3. 使骚动
   His speeches fermented trouble among the work force.

   他的讲话在工人中引起骚动。

vi.

1. 发酵
   Fruit juices ferment if they are kept a long time.

   果汁放置日久会发酵。

2. 骚动

v.

1. undergo or cause to undergo fermentation.
2. stir up (disorder).

n.

1. agitation and social unrest.
2. dated a fermenting agent or enzyme.