It's raining cats and dogs.下倾盆大雨.
He is a green hand.他是新手.
I live in the Big Apple.我住在纽约市.
I don‘t know beans about computers.我对电脑一窍不通.
a white lie 真实的谎言
be in red 亏损 负债
green-eyed 嫉妒的
be beaten black and blue 被打得青一块,紫一块
black tea 红茶
couch potato 庸懒的人,正在坐在沙发上的人
hot potato 难对付的人
black sheep 害群之马
blackmail 敲诈,勒索
white elephant 无用而累赘的东西
in a blue mood 情绪低落
a bolt out of the blue 晴天霹雳
green back 美钞
as poor as a church mouse 一贫如洗
dog watch 值夜班
You are a lucky dog.你是个幸运儿.
an early bird 早到的人,早起的人