assist sb. with sth. 帮助某人做某事
assure sb. of sth. 使(某人)确信(某事)
attach to 使属于，使参加
attach oneself to 依附;参加党派
be attached to 附属于;喜爱;爱慕
attach importance to 认为重要
attain to 达到(理想的状态)
attend on 照顾，侍候
attend to 专心;照顾，护理
pay attention to 注意;重视
be attentive to 对…关怀
be available for 有效
on an average 平均起来，一般说来
be aware of 知道，意识到，认识到
right away 立刻，马上
back and forth (前后)来回地，往返
back away 逐渐后退
back of 在…的后面;在…背后
get back at 报复
go back on 丢弃(朋友等);食言
go back to 追溯到…
back up 支持，援助;倒退
keep one's balance 保持(身体)平衡
lost one's balance 失去平衡;心慌意乱
off balance 不平稳的，摇摆的
on balance 总的说来
based on 以…为基础
bear away 夺得;赢得(奖品等)
bear sth. in mind 记住(某事)
bear on 对…施加影响;有关
bear out 证实，证明
bear with 宽容;耐心等待
beat down 打倒，推翻;杀(价)
beat off 击退，打退(进攻)
beat up and down 来回奔走
begin with 以…开始;开始于
to begin with 首先，第一
on behalf of 代表…，为了…
believe in 相信，信仰，主张
make believe 假装，装作
belong to[bi'l08]属于;附属
for the best (完全)出于好意
as best one can 尽最大努力
at best 充其量，至多
best of all 最(好)，首先
at one's best 处在最好状态
do one's best 尽力，努力
do one's level best 全力以赴
get the best of 胜过，打赢
had best 最好，顶好
make the best of 充分利用(时间等)
for the better 好转，向好的方向发展
get the better of 打败，智胜
had better do sth. 还是…好，最好还是…
a bill of fare 菜单;节目单
bit by bit 一点一点地，渐渐
do one's bit 尽自己的一份力量
every bit 每一点，完全(一样)
black and blue (被打得)遍体鳞伤
From:https://www.zgghmh.com/CET-4/20003474.asp