求翻译：Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali(强碱) sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool, is about 280 feet below sea level and the lowest point in the United states.是什么意思？

death valley is one of the most famous deserts in the United States, covering a wide area with its alkali (alkali) sand almost 20 percent of this area is well below sea level, and badwater, a salt water on the pool is about 280 feet below sea level and the lowest point in the united states.

Death Valley is one of the most famous deserts in the United States covering a wide area, with its strong alkali (base), sand Almost . 20 percent of this area is well below sea level, and Badwater, a salt water pool, is about 280 feet below sea level and the lowest point in the United states.

Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali (strong alkali) sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool, is about 280 feet below sea level and the lowest point in the United states.

Death Valley is one of the most famous deserts in the United States, covering a wide area with its alkali (alkali) sand. Almost 20 percent of this area is well below sea level, and Badwater, a salt water pool, is about 280 feet below sea level and the lowest point in the United states.

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