名词
中文翻译：山谷
同义词：
['valley', 'hillside例句：1. The vallis were once covered in lush greenery.（山谷曾经覆盖着郁郁葱葱的植被。）']
例句：
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1. The vallis were once covered in lush greenery.
山谷曾经覆盖着郁郁葱葱的植被。
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2.She stood at the edge of the vallis and took in the breathtaking view.
她站在山谷的边缘，欣赏着令人惊叹的景色。
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3.The vallis are home to a variety of wildlife and plant species.
山谷是各种野生动物和植物物种的家园。