名词
中文翻译：Unknown
同义词：
['inner side of the mountain', 'inside the mountain', 'under the mountain']
例句：
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1. Thehikers were hiking up the mountainside to enjoy the view.
登山者正在攀登山的内侧，欣赏风景。
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2.The climbers were climbing up the mountainside to reach the summit.
攀岩者正在攀登山的内侧，到达山顶。
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3.The hikers were hiking down the mountainside to return home.
登山者正在下山，返回家中。