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The fineness of the ash in this case is unusual, says Thorvaldur Thordarson, an Icelandic volcanologist.
冰岛的火山学家托瓦杜?托达森表示,这次岛山冰川产生的火山灰的细腻程度是十分不寻常的。
youdao
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The fineness of the ash in this case is unusual, says Thorvaldur Thordarson, an Icelandic volcanologist.
冰岛的火山学家托瓦杜?托达森表示,这次岛山冰川产生的火山灰的细腻程度是十分不寻常的。
youdao