但争议并没有最后地解决，其他的各种可能性，例如由爆炸来自地下的沼气的说法仍旧在研究着。
But the debate has not been settled definitively and other possibilities, such as underground methane, are still being investigated.
在基伍湖里，细菌将CO2转换成非常易燃的沼气，随时都可能引发更加危险的爆炸。
In lake Kivu, bacteria in the lake convert the CO2 into methane, which is highly flammable and could trigger an even more dangerous lake explosion.
当春天到来，冰雪消融时，这些沼气泡泡会嘶嘶作响，场景很是壮观——但是如果恰巧周围有人在划火柴，大量的沼气会引发一场巨大的爆炸。
Come spring, when the ice melts, the methane bubbles pop and fizz in a spectacular release - but if anyone happens to light a match nearby, the masses of methane will ignite into a giant explosion.
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