名词
中文翻译：自然障碍物同义词
同义词：
['natural barrier', 'natural impediment']
例句：
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1. The hiker had to navigatearound several natural obstacles along the trail.
登山者不得不在小径上绕过几个自然障碍。
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2. The team faced a natural obstaclein their competition: unexpected rain.
团队在比赛中遇到了一个自然障碍：突如其来的雨。
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3.The project encountered a natural obstacle that requiredadditional resources.
该项目遇到了一个自然障碍，需要额外的资源。