Miners tread down into the crater to collect blocks of bright-yellow sulfur, which forms when gaseous and molten sulfur emerges from fumaroles -- volcanic vents -- and hardens.

从火山口喷发出的硫磺蒸汽硬化凝结后，就形成了那些闪着黄色亮光的硫磺岩块，矿工们小心翼翼的探到火山坑底，冒着生命危险搜集这些黄色亮块。

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Major, explosive volcanic eruptions send tons of gaseous sulfur compounds high into the atmosphere.

更重要的，火山爆发会将数吨高浓度的气态硫化合物释放入大气中。

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Sulfur is found abundantly in volcanic regions.

硫在火山地区大量存在。

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What is known is that 3.5 billion years ago, Crotts says, the moon regularly spewed forth large amounts of water vapor and sulfur dioxide through volcanic surface vents.

FORBES: Active Moon? Recent Lunar Surface Phenomena May Signal Some Form Of Volcanism