twenty-four seven = 24 hours a day, 7 days a week = all the time 永远，一直
go for a song = be sold very cheaply 贱卖
bucket down = rain very heavily 瓢泼大雨
backroom boys 幕后英雄
pull one’ s leg = tease someone 开某人玩笑
break one’ s back 辛勤工作
below the mark = not measure up 不够水平，不合格
beyond compare 绝佳的，最棒的
break even 不赔不赚
by the book 照章办事
cast a cloud over 泼冷水，是蒙上阴影
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