The snotites are, in fact, vast colonies of bacteria, “鼻涕石”其实是大型菌落

292. These strange stalactite-like formations are known, rather appropriately, as snotites,
     这些奇特的钟乳石状的结构 确切地说 叫做“鼻涕石”
293. the drops dripping from the ends are sulphuric acid,
     其末端滴落的液滴就是硫酸
294. strong enough to burn skin.
     酸性强到足以腐蚀皮肤
295. The snotites are, in fact, vast colonies of bacteria,
     “鼻涕石”其实是大型菌落
296. capable of going a centimetre a day.
     每天能长长1厘米
297. In this world without sunlight
     在这个没有阳光的世界里
298. these bacteria extract energy from the hydrogen sulphide gas.
     这些细菌只能从硫化氢气体中吸收能量

来自《行星地球 第一季 第四集 Planet Earth S01E04 洞穴》第 295 行