attentive 注意的，专心的 an attentive audience

attribute 把归因于，把......(过错的责任等)归于(to) He attributed his success to hard work.

auxiliary 辅助的 an auxiliary rocket

avail 有利于，有助于 Will force alone avail us?

average 平均数，平均 The paper receives an average of nearly 100 articles a day.

avert 挡开，防止，避免 Many traffic accidents can be averted by courtesy.

awake 醒，觉醒 awake from sleep

bang (突发的) sudden loud bang

bare 赤裸的，光秃的，空无内容的 walk in bare feet

beforehand 预先，事先 If you wanted soup for lunch you should have told me beforehand.

behave 举止端正，听话　Do behave.

bewilder 使迷惑，使糊涂 I’m bewildered as to which one to buy.

bias 偏见，偏心 have a bias against sb.(或sth.)

blame 责备，责怪 Public opinion blames Mrs Smith for leading the girl astray.

blast 一阵(风)，一股(气流) a blast of wind

blaze 火焰 The fire sprang into a blaze.

blunt 钝的 The sun was blazing down and the heat was oppressive.

blush (因害羞、激动、窘困)脸红 blush with(或for) joy

boast 自吹自擂，自夸的话 He is full of boasts.

bolt 螺栓，(门，窗的)插销 a small bag of nuts and bolts

boom 低沉有回响的声音 The great bell tolled with a deep boom.

border 边界，边境，边沿 a district on the Kampuchean side of the border with Thailand

bore 钻孔，挖(通道) bore through a wall

bound 跳跃，弹回 She bounded to her feet and waved her right hand triumphantly.

boycott (联合起来)抑制，拒绝参加 boycott uncooperative manufactures