名词
中文翻译：山冈
同义词：
['mountain', 'hill', 'ridge']
例句：
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1. The sun sets behind the mountain range.
太阳从山脉后面落下。
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2. The hikers climbed up the mountain to reach the summit.
登山者爬上了山顶。
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3. The river flows through the valley, cutting a deep gorge in the mountain.
河流穿过山谷，在山上切出一条深深的峡谷。