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)

例:The beads are DNA segments wrapped around the histones.

7.beam v.堆满笑容(to smile with joy)；n.（光线等的）束，柱(ray or stream of light or other radiation)

联想记忆：be+am--做我自己，成为国家的栋梁一柱

例:In each 30-second period, the beam sweeps through 3.690度.

8.bearer n.搬运工( porter)；生育者(one who breeds)

来自bear(v.负荷：运载)

例:child bearer孕妇

9.beckon v.召唤 (to summon)吸引,引诱 (to attract)

例:Employers showed surprisingly little interest in changing that perception, even when higher profits beckoned.

10.beehive n.蜂窝：蜂箱(a hive for bees)

分拆记忆：bee(蜜蜂)+hive(蜂房，蜂箱)--蜂窝,蜂箱

例:A beehive's honeycomb cannot have some sections that contain toxic honey and other sections that contain nontoxic honey.