n.发蓝；青化法；蓝色漂白剂
=bluing.
Do you think the blue car is only do30? 你看这辆蓝车只开30英里的时速吗？
My blue coat is en years old. It has seen better days. 我的蓝上衣穿10年，已经很旧了。
The carpenter was wearing a pair of blue overalls. 那木匠穿着蓝色的工装裤。
He was attired in blue. 他穿着蓝色衣服。
