| 单词 | lava fountain | 
| 释义 | lava fountain Ash and rock fragments (tephra) ejected during lava fountain activity are unlikely to be high enough to disrupt regional air traffic.  Retrieved from Wikipedia CC BY-SA 3.0   This indicates that a lava fountain probably blasted lava away from its point of origin.  Retrieved from Wikipedia CC BY-SA 3.0   During the night a 700 m high lava fountain was thrown up from the main crater.  Retrieved from Wikipedia CC BY-SA 3.0   These were deposited during periods of lava fountain activity.  Retrieved from Wikipedia CC BY-SA 3.0   At times, lava fountains were reaching heights of 200 feet and feeding a lava flow that advanced to the northeast.  Retrieved from Wikipedia CC BY-SA 3.0    | 
	
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