硫化钠的英文：
sodium sulfide
sodium sulfuret
sodium sulphide

Sodium and water react together.
钠和水能起反应。

Sodium and sulphur are highly corrosive.
钠和硫磺腐蚀性很强。

Salt decomposes into sodium and chlorine.
盐分解成钠和氯。

sulfide in veinlets accounts in places for a considerable part of the total
细脉中的硫化物在有些地方，占总量的相当大的部分。

The shock of the cold makes the metal sulfides crystallize.
低温使得金属硫化物结晶。

A sulfide compound containing at least two sulfur atoms per molecule
多硫化物每个分子中至少含有两个硫原子的一种硫化物