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Three months ago, Mt Tongariro erupted, sending a cloud of ash into the sky. Today the same thing happened and it happened suddenly, without any early signs or noise. Again it sent a cloud of ash into the sky, about 5000m high. Listen to August 8th 2
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Plateaus 高原 A huge flat area on the ground is called field. 地面上的大块平地叫做平原。 Then what is a huge high flat area? It is a plateau. 那大块的平坦高地又是什么？高原。 A plateau can be made by various activities.
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At that time, the lower forty-eight United States had not seen a volcanic eruption for over sixty-five years. 当时，美国本土的48个州在过去的65年里没有见过火山爆发。 Therefore the government volcanologists called in to monitor
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