The narrow band data traces atoms in the nebula, with emission from sulfur atoms in red, hydrogen atoms in green, and oxygen in blue.

窄带滤波器的数据追踪的是星云中的原子，硫原子发出红光、氢原子放出绿光，而氧原子呈现蓝光。

youdao

The colors in the image represent a range of emissions coming from the clouds of the nebula: red represents nitrogen, green represents hydrogen, and blue represents oxygen.

图中不同的颜色代表了星云云团里喷发出来的不同物质：红色代表氮，绿色代表氢，蓝色代表氧。

youdao

But for NASA's Wide-field Infrared Survey Explorer, or WISE, the nebula springs to life as a green "dragon" more than a hundred light-years wide.

但是NASA的宽视野红外线探测器(WISE)的观测下，这个星云就突然变成了一条“绿龙”，比一百光年还宽。

youdao