管线颜色标准化: color identification of pipe linescolour identification of pipe lines
太阳: 1.(银河系的恒星之一) the sun 短语和例子青年人朝气蓬勃, 好像早晨八九点钟的太阳。 young people, full of vigour and vitality, are like the sun at eight or nine in the morning.2.(太阳光) sunshine; sunlight 短语和例子晒太阳 bask in the
