chemocline

Typically the green and purple sulfur bacteria live in that chemocline, enjoying the supply of H2S from below and sunlight from above.

绿菌与紫菌通常会生活在化变层中，同时享受下方源源化氢与上方充足阳光。

So long as their balance remains undisturbed, the oxygenated and hydrogen sulfide–saturated waters stay separated, and their interface, known as the chemocline, is stable.

直到达成平衡、互相干扰，充氧与饱和化氢此分隔，而且两者间界面「化变层」也是稳定。