blueadj.蓝色的；天蓝色的；蔚蓝色的；(由于冷或呼吸困难)发青的，青紫的；忧郁的；悲伤的；n.蓝色；天蓝色；蔚蓝色；蓝色荣誉者(牛津或剑桥大学的校队运动员)；蓝色荣誉的头衔；错误；失误
The blue files are used for storing old invoices.
蓝色卷宗是用来存放旧发票的。
She was wearing two blue silk ribbons in her hair.
她的头发上系着两根蓝色丝带。
The air was crisp and clear and the sky was blue.
空气清新，天空碧蓝。
