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How Do Geysers Shoot Hot Water and Steam High Into the Air?
间歇泉为何能将热水和蒸汽喷向高空？
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Underground water flows into narrow rock channels near hot magma.地下水流入靠近炽热岩浆的狭窄岩石通道。
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Heat builds pressure as water turns to steam deep underground.地下水在地下深处受热转化为蒸汽，压力随之增大。
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When pressure becomes too high, steam forces water upward fast.当压力过高时，蒸汽迅速将水向上推。
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The water bursts out as a tall, hot geyser spray.水以高温喷泉的形式猛烈喷出，形成高耸的水柱。
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After eruption, the system refills and reheats slowly for next time.喷发后，系统缓慢重新注水并再次加热，为下一次喷发做准备。
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Geysers only happen where heat, water, and special rock plumbing meet.间歇泉只出现在地热、水源和特殊岩石管道结构三者交汇之处。
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Old Faithful in Yellowstone erupts about every 90 minutes.黄石公园的老忠实间歇泉约每90分钟喷发一次。
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Scientists monitor temperature and ground shaking to predict eruptions.科学家通过监测温度和地面震动来预测喷发。