These bacteria actually combine the hydrogen sulfide with the carbon dioxide and this chemicalreaction is what produces organic material which is the food for larger organisms.
这些细菌实际上就是硫化氢和二氧化碳的结合体，而这种化学反应产生的有机物质是更大的有机体的食物。
2
The chemicalreaction that follows is very complex and continues for many years, and the concrete just keeps getting harder.
接下来的化学反应非常复杂，会持续很多年，混凝土只会变得越来越硬。
3
The bacteria, well the bacteria kind of feed the tubeworms through chemosynthesis, remember, that chemicalreaction I described earlier.