chemocline

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

绿硫菌紫硫菌通常会生活在化变层中，同时享受下方源源绝硫化氢上方阳光。

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，氧海和硫化氢海彼此分隔，而且两者间界面「化变层」也是稳定。