名词
中文翻译：山丘
同义词：
['hill', 'mound', 'hillock']
例句：
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1. The kopjes are a natural wonder in the park.
这些小山丘是公园里的自然奇观。
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2. The hikers climbed up to the top of the kopje for a better view.
登山者爬上了山顶，为了更好的景色。
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3. The kopjes were formed by the erosion of the nearby river.
这些小山丘是由附近的河流侵蚀形成的。