branch for rejecting surplus grain多余: unnecessary; more than what ...粮食: grain; cereals; food回流管: return pipe回流管: backflow connection; bypass line trip; crossover; recirculatory pipe; reflux pipe; return conduit; return duct; return line; return pipe; return tube; runback回流管溢流管: overflow pipe下载手机词典可随时随地查词查翻译
