单词	collecting purchasing
释义	collecting purchasing 中央采购
随便看	single-breath diffusing single-breath diffusingcapacity single-breath nitrogen single-breath nitrogentest single breath nitrogen test single-breath nitrogen test singlebreathnitrogen washout singlebreath nitrogen washout single breath nitrogen washout single-breath nitrogen washout single breath oxygen single-breath oxygen single breath test single-breath test single breath test for carbon dioxide single breech presentation single breeding population single-breeding population single Bremsstrahlung radiations single bricking-up chimney single brick wall single bridge single-bridge singlebridged polymer single-bridged polymer