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、不互，充氧的海水与饱和化氢的海水彼此分隔，而两者间的界面「化变层」也是稳定的。

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

绿与紫常会生活在化变层中，同时享受下方源源不绝的化氢与上方充足的阳光。