英汉词典

1. 蓝色；天蓝色
    Something that is blue is the colour of the sky on a sunny day.

    e.g. There were swallows in the cloudless blue sky...
           燕子在万里无云的蓝天飞翔。
    e.g. She fixed her pale blue eyes on her father's.
           她淡蓝色的眼睛紧紧盯着她父亲的双眼。

2. 蓝调音乐，布鲁斯音乐（源于美国南部黑人音乐家，节奏缓慢，旋律感强）
    The blues is a type of music which was developed by African American musicians in the southern United States. It is characterized by a slow tempo and a strong rhythm.

    e.g. His singing really does have the depth and the emotional range of the blues.
           他的歌声确实颇有布鲁斯音乐的内蕴和情感深度。
    e.g. ...the blues bars of Chicago.
           芝加哥的蓝调酒吧

3. 忧郁；沮丧；悲伤
    If you have got the blues, you feel sad and depressed.

blue在线翻译

    e.g. Interfering in-laws are the prime sources of the blues.
           喜欢指手画脚的姻亲最让人头疼。

4. 忧郁的；沮丧的；悲伤的
    If you are feeling blue, you are feeling sad or depressed, often when there is no particular reason.

    e.g. There's no earthly reason for me to feel so blue.
           我也说不出来为什么这么沮丧。

5. （剑桥或牛津大学的）校队运动员，蓝色荣誉者
    A Cambridge blue or an Oxford blue is a man or woman who has played for Cambridge or Oxford University in a particular sport.

6. 色情的；黄色的
    Blue films, stories, or jokes are about sex.

    e.g. ...a secret stash of porn mags and blue movies.
           偷偷藏起来的一堆色情杂志和黄色影碟

7. 突然；出乎意料地
    If something happens out of the blue, it happens unexpectedly.

    e.g. One of them wrote to us out of the blue several years later.
           数年后他们中的一人突然给我们写了一封信。

8. bolt from the blue -> see bolt
    blue moon -> see moon
    blue murder -> see murder