1.bold a．勇敢的，大膽的(showing a fearless daring spirit)

聯(lián)想記憶：b+old(年長)--年長的人通常比較膽大--勇敢的，大膽的

例:In 1928 he took the bold step of threatening a strike against Pullman.

派生詞:boldface(n．黑體字)

2.bolster v.支持(to support)；鼓勵(lì)(to give a boost to)

例:The proposed legislation failed to bolster workplace safety regulations.

3.bolt n.螺栓(metal pin with a head at one end, and a thread)；雷電(a lightning stroke, thunderbolt)

聯(lián)想記憶：大膽( bold)不怕雷電(bolt)劈

例:a lightning bolt閃電，霹靂//All of the fasteners, such as bolts and screws have for several years been supplied by Brindon Bolt Barn.

4.bombard v.炮轟，射擊(to attack especially with artillery or bombers);n.射石炮(a late medieval cannon used to hurl large stones)

詞根記憶：bomb(轟炸)+ard --炮轟

例:A team of scientists has recently provided evidence of Earth being bombarded daily with as many as 40,000 small comets, which vaporize in the upper atmosphere and fall to Earth as rain.

派生詞：bombardment(n.轟炸，炮擊)

5.bona fide a.可信的(authentic)；真誠的，真實(shí)的(genuine)

例:the bona fide bills正當(dāng)票據(jù)

6.bond n.結(jié)合(a uniting force or tie a ltnk)；債券（certificate issued by a govern-ment or a company acknowledging that money has been lent to it and will be paid back with interest);v.(使）結(jié)合( to cause to adhere firmly)

發(fā)音記憶：“綁得”--綁在一起一結(jié)合

例:Customer loyatty programs are attempts to bond customers to a company and its products and services.

派生詞：bonded(a．束縛的，結(jié)合的)；bondage(幾，束縛)

7.bonus n.獎(jiǎng)金，紅利(dividend)

聯(lián)想記憶：bon(好的)+us(我們)一發(fā)獎(jiǎng)金啦，我們都說好！一獎(jiǎng)金

例:A union contract specifies a 6 percent salary increase plus a $450 bonus for each employee.

8.boom v.迅速發(fā)展(to grow rapidly in economy)；興旺(flourish)；n．繁榮( vigorous growth)

例:Enrollment figures boom during these periods.//The current economic boom ends and consumers can no longer buy major luxury items.

9.boomerang n.回飛棒(a bent or angular throwing club designed to return near the thrower)：自食其果的言行(an act or utterance that backfires on its originator)

例:boomerang effects回旋效果

10.boost v./n.推，舉（to lift）；促進(jìn)(to promote)；吹捧(to praise)

例:The jet engine could help boost cargoes into space at significantly low costs.//Citizens want the government to take action to boost the economy.