narrowing

名词 narrowing:

1. an instance of becoming narrow
2. a decrease in width
3. the act of making something narrower

动词 narrow:

1. make or become more narrow or restricted
   同义词：narrow, contract
2. define clearly
   同义词：pin down, peg down, nail down, narrow down, narrow, specify
3. become more special
   同义词：specialize, specialise, narrow, narrow down
4. become tight or as if tight
   同义词：constrict, constringe, narrow

形容词 narrowing:

1. becoming gradually narrower
   同义词：tapered, tapering
2. (of circumstances) tending to constrict freedom
   同义词：constricting, constrictive

1. The tunnel contract to a narrow passageway as you go deep.
   再往里走，坑道缩小成了一条窄窄的通道。
2. A narrowing of a mineral deposit, as in a mine.
   减少矿物沉积物的减少，如在煤矿中
3. The field of inquiry has narrowed down to five people.
   调查的范围已经缩小到只剩5个人了。
4. They planed to narrow the gap between imports and exports.
   他们计划缩小进出口的差额。