名词
中文翻译：下坡
同义词：
['underlying slope', 'underside slope']
例句：
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1.The hikers were hiking down the underslope of a mountain.
登山者正在下山。
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2.The engineer studied the underslope of the riverbed to determine its stability.
工程师研究河床的下坡面以确定其稳定性。
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3. The car was driving over the underslope of the hill.
汽车正驶过山丘的下坡面。