The common colours are: blue for nitrogen, red for oxygen, yellow for sulphur and cyan for carbon.
颜色代表是：蓝色是氮，红色是氧，黄色是硫，蓝绿色(青色)是碳。
2
The earth itself was the finest sand, but blue as the flame of burning sulphur.
地上全是最细的砂子，但是蓝得像硫黄发出的光焰。
3
We proposed that, because of the high scatter rate, sulphur vacancy is the main obstacle on the achieve of high brightness blue thin film electroluminescence.