Today, pipes are used to siphon carbon dioxide-rich water from the bottom of Lake Nyos.

今天，用管道从尼奥斯湖底抽取含有丰富二氧化碳的湖水。

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That is what happened in Cameroon in 1986, when naturally occurring carbon dioxide trapped at the bottom of Lake Nyos erupted and killed 1, 746 people in nearby villages.

喀麦隆1986年的时候就发生过类似的惨案，当时深埋在尼欧斯湖底的天然形成的二氧化碳突然喷发，造成邻近村庄一千七百四十六人死亡。

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In the worst recent case, 1, 700 people died after a 1986 earthquake released 1.2 million metric tons of CO2 from the depths of Lake Nyos in Cameroon, the International Energy Agency said.

根据国际能源署的资料，近年来最坏的一次发生在1986年喀麦隆。 由于地震的引发，120万吨二氧化碳从尼奥斯湖中泄露出来，导致1700人死亡。

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The eventual number of people who died in the Lake Nyos gas leak was put at more than 1, 700.

BBC: 1986: Hundreds gassed in Cameroon lake disaster

It revealed that Lake Kivu, in Rwanda, is becoming saturated with carbon dioxide just as Lake Nyos was, and is seriously at risk of lake overturn.

BBC: 1986: Hundreds gassed in Cameroon lake disaster

Pipes have now been put in place in Lake Nyos and nearby Lake Monoun to siphon water from the lower layers up to the surface and allow the CO2 at the bottom of the lake to slowly bubble out, preventing a repeat of 1986 tragedy.

BBC: 1986: Hundreds gassed in Cameroon lake disaster