有关在天然山坡发生的山泥倾泻的分布、性质及起因研究仍在进行。
Research into the distribution, nature and causes of landslides on natural terrain is continuing.
在萨尔瓦多，至少有179个有山泥倾泻的报告和11,000人被疏散。
In El Salvador, at least 179 landslides have been reported and 11,000 people were evacuated.
山泥倾泻产生的泥石体积是1980年5月18日圣海伦山岩屑崩落的1000多倍。
The volume of the landslide debris is more than 1, 000 times greater than that from the May 18, 1980, debris avalanche from Mount St. Helens.
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