body and breeches 完全

boil down to 归结起来是;其结果是

boiling point 爱情的沸点

bolt from the blue 晴天霹雳

bone up on 努力研读

born with a silver spoon in one's mouth 出生富贵

born yesterday 乳臭未干

bottoms up 干杯

Bottoms up! 干杯!

brain storm 心血来潮

brand new 崭新的

break down 故障;毁坏

break in 适合

break it off 吹了

break one's heart 使某人心碎

break one's neck 痛打一顿;拼命做某事

break the ice 打破僵局;打破沉默

break the routine 调剂一下

bred in the bone 天生的;个性的

bring back the good old days 回忆昔日好时光

bring down the house 掌声雷动

bring me up-to-date 告诉我最新消息

bring sb to date 使某人掌握最先进东西

brotherly impulse 激动手足的情分

brush off (男女之间)甩;撇开

brush up on sth 复习,重新学习

buck up 振作起来