名词
中文翻译：盆地周长
同义词：
['basin perimeter', 'basin periphery']
例句：
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1.The basin is surrounded by a river and mountains.
这个盆地被一条河流和山脉环绕。
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2.The basin perimeter is 20 kilometers long.
盆地周长是20公里长。
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3.The basin perimeter is used to calculate the area of the lake.
盆地周长用于计算湖泊的面积。