bellows基本解释
n,[机]波纹管；风箱；皮老虎,同近
波纹管；风箱；皮老虎英释中释nA bellows is or bellows are a device used for blowing air into a fire in order to make it burn more fiercely
metal bellows,金属波纹管；金属伸缩软管.短语
