1. Mary has felt blue ever since her boyfriend left for Europe.
自从她男朋友去了欧洲以后，玛莉一直感到闷闷不乐。
2. You get a chance like this only once in a blue moon.
这种机会真是千载难逢。
3. You can talk till all is blue but I shall not believe it.
你可以没完没了地说下去，但我是不会相信你的。
4. Do you see any green in my eye?
你以为我那么好骗吗？
5. Although he is physically old, his mind is still in the green.
尽管他身体已经衰老，但是思想还是很活跃。
6. She is red with anger.
她气得满脸通红。
7. All the family is in the pink.
全家人的身体都好极了。
8. Though I believe in telling the truth, I think a white lie is sometimes justified.
虽然我认为应该说实话，但我认为善意的谎言有时也是无可非议的。