adj (1) 蓝色的(having the colour of a clear sky or the deep sea on a fine day)：～eyes/dresses/sky/paint蓝眼睛/衣服/天/漆;The sky is deep～.天空湛蓝。paint sth～把……漆成蓝色的;His face was/hands were～with cold.他的脸/手冻得发青。be～in the face (冻得)脸色发青;～blood/book/ribbon/whale 高贵血统/蓝皮书(英议会官方报告)/蓝授带/蓝鲸;

(2) 沮丧的，伤心的(sad; depressed)[作pred](infml)：feel/look～觉得/样子显得沮丧;Things are looking～.情况看来不乐观。She was～about not being invited to the dance. 她因为没被邀请参加舞会而伤心。〖同〗sad，depressed;〖反〗excited，happy，joyful;

(3) 色情的(indecent; very rude in an immoral way)：a～film/movie/joke色情电影/色情影片/猥亵的玩笑;His jokes were a bit～.他的玩笑有点儿猥亵的味道。

scream/shout blue murder大声狂号：When the doctor pushed the needle into her arm， she shouted～murder.大夫把针头推进她的胳膊时，她拼命号叫。

→′blueness n 蓝;沮丧;′bluebell n 蓝色钟形花;′bluebird n 蓝色知更鸟;blue-′blooded adj 出身名门的;′blue͵bottle n 蓝色大苍蝇;͵blue-′collar adj 蓝领阶级的;′blue͵fish n 青鱼; ′blue͵jacket n 水兵;͵blue-′pencil vt 删改(稿件);′blue͵print n 蓝图;bluish adj 带蓝色的;

n (1) 蓝色，青色 (blue colour)[C，U]：be of pale/light/dark～是浅/亮/深蓝色的;material with a lot of～in it深蓝色的布料;The two～s are quite different.这两种蓝色大不一样。That is a beautiful～.那是一种很漂亮的蓝色。

(2) 蓝衣服 (blue clothes)[U]：be dressed in～穿蓝衣服;

(3) 蓝天，大海 (the sky or the sea)[U，the～]：The balloon floated off into the～.气球飘上蓝天。The ship sailed off into the～.那船驶向大海。

out of the blue意外地：He arrived/appeared out of the～.他出人意外地来到/出现了。