buffer country

1. North and south Sudan agreed to set up a demilitarized buffer zone along their border days before the country splits.
   南北苏丹同意在国家分裂前沿着双方的边界建立非武装缓冲地区。
2. On Nov. 23, China declared the area to be an air-defense identification zone, or ADIZ-an extra buffer beyond a country's official air space, in which foreign planes may be asked to identify themselves and their flight plans.
   11月23日中国宣布这块空域为中国的防空识别区，即正式领空之外的额外缓冲区，在这个区域内，外国飞机可能被要求通报身份以及飞行计划。
3. The edge district of city is a buffer area between country and city. It has the characteristics of high market degree in using the farmland, intensive using the farmland and frequent move and so on.
   城市边缘区是农村与城市的过渡地带，具有农地利用市场程度高，集约利用和流转频繁等特点。
4. The construction work of the riparian buffer zone is paid more attention to due to the serious water pollution problems in our country and the further deterioration of ecological environment.
   随着我国的水资源的污染日益严重，生态环境的恶化进一步加剧，河岸缓冲带的建设日益受到重视。

noun

1. a small neutral state between two rival powers

   Synonym:    buffer state