is actually coloured white with sulphuric acid. 竟然被硫酸染成了白色

273. But one cave is so inhospitable
     可是有一个洞穴的环境过于险恶
274. that one would not expect it to contain any life whatsoever.
     不管什么生物似乎都不可能在那里生存
275. The water flowing out of the Villa Luz cave in Mexico
     从墨西哥露兹别墅山洞流出来的水
276. is actually coloured white with sulphuric acid.
     竟然被硫酸染成了白色
277. Explorers entering this dangerous cave
     探险家们进入这个危险的山洞时
278. must wear respirators and carry monitors.
     必须戴上防毒面具 并携带通话器
279. Poisonous gases rise to fatal levels so quickly
     有毒气体很快就会达到致命的程度

来自《行星地球 第一季 第四集 Planet Earth S01E04 洞穴》第 276 行