all cats are grey in the dark
定义这个短语的意思是在黑暗中，外表并不重要。
这句话出自本杰明·富兰克林。
I really don't care if she is ugly. All cats are gray in the dark.
be in black and white
定义 写下来 示例My conditions to accept the job were in black and white in the contract.
black and blue
定义 浑身淤青 示例He was black and blue the day after the accident
black sheep
定义家庭或团体中声名狼藉的成员，害群之马。
示例They say he's the black sheep of the Bakers.
black-and-white
定义当你对某些情况有一种过于简单化的看法，而实际上情况更为复杂时，你就会这么说。
例子I think terrorism isn't a black-and-white issue.
feel blue
定义 感到悲伤。 示例She felt blue after her divorce.
green light
定义允许继续进行某事，如一个项目。
示例As a result of the severe drought, the government has given the green light for importing cereals.
in the pink
定义 健康。 例子He has been in the pink since he decided to go on a diet and exercise regularly.
out of the blue
定义 完全出乎意料的事。 例子She sent him a letter, out of the blue, telling him that she was in love with another guy.
red handed
定义在做了错事或违法的事情后被发现
例子She was caught red-handed, stealing a ring.
red ink
定义 经济损失的委婉说法。 例子There is too much red ink in the company's financial statement.
run a red light
定义to run a red light这个短语是一个习语，意思是继续开车穿过十字路口，遇到红灯不停车。
例子I was so late to work and to make matters worse I got a ticket for running a red light yesterday.
