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1.barrel n.桶(cask)；v.把…装桶(to put or pack sth. in a barrel) 联想记忆：bar(栅栏，障碍)+rel--横木围住的桶 例:World consumption of oil is currently 26 billion barrels a year. 2.barren a．贫瘠的(not productive)；(of)没有的，缺乏的(devoid, lacking) 词根记忆：bar(栅栏，障碍)+ren--阻碍发展--没有的，缺乏的 例:No doubt castle and cathedral building was not totally barren of profit. 3.barrier n.栅栏(fence)：障碍，壁垒(obstacle) 词根记忆：bar(栅栏，障碍)+rier--栅栏，障碍 例:trade bamers贸易壁垒 4.batch n.—批(a quantity( as of persons or things) considered as a group);v.分批处理(to bring together or process as a batch) 联想记忆：bat(蝙蝠)+ch一蝙蝠都是成群生活--一批 例:Some batches of polio vaccine used around 1960 were contaminated with SV40,a virus that in monkeys causes various cancers. 派生词：batcher(n.混凝土材料计量器) 5.battalion n.军营，军队(army) 词根记忆：bat(战斗)+talion --用于战斗的--军队 例:The army policies kept most Black units working in labor battalions. 同根词：battle(n.战争) 6.bead n.小珠子(a small piece of material pierced for threading on a string or wire)；(水、血、汗酌)小滴(drop of liquid) | 
