1·Bacteria feed on this oil and release hydrogen sulfide gas.
细菌以这种油为食，并释放硫化氢气体。
2·This gas is hydrogen sulfide, rises up and mixes with oxygen in the underground water that sits in the cracks and fissures in the limestone.
这种气体是硫化氢，上升后与石灰岩裂缝中地下水的氧气混合。
3·They have these special organs that collect the hydrogen sulfide and carbon dioxide and then transfer it to another organ, where billions of bacteria live.
他们有这些特殊的器官来收集硫化氢和二氧化碳，然后把它们转移到另一个器官，那里有数十亿的细菌。
4·Hydrogen sulfide leaks, methane explosions, mine-stope collapses, oh my! Coal mining is an ancient profession, and has been recognized as wildly risky since the very start.
硫化氢泄露、甲烷爆炸、煤矿坍塌，天呢，太危险了！煤矿开采是一种古老的职业，有史以来，就一直被认为是风险极高的职业。
5·Its most familiar compound is hydrogen sulfide, a poisonous gas that smells like rotten eggs. All metals except gold and platinum form sulfides, and many ores are sulfides.
最常见的一种化合物是硫化氢，是一种具有臭鸡蛋气味的极毒气体。除了金和铂以外，所有的金属都能跟硫化合生成硫化物，许多矿物就是这种硫化物。