edge

n.

1. 邊，稜；邊緣[C][U]
   They lived in a house on the edge of a forest.

   他們住在森林邊緣一所房子裡。

2. 刃，刀口[C]
   He sharpened the edge of his knife on a grindstone.

   他在磨石上磨快了他的刀刃。

3. 優勢；優越條件[S]
   The Democrats hold the edge in the Senate.

   民主黨人在參議院中佔優勢。

4. （言語等）尖銳；敏銳；激烈[S1]
   His remark has a biting edge to it.

   他的話非常尖銳辛辣。