名词
中文翻译：视觉悬崖
同义词：
['visualbarrier', 'visual impediment例句：1. The hiker wasforced to turn back at the visual cliff.（登山者被迫在视觉悬崖处折返。）']
例句：
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1. The hiker wasforced to turn back at the visual cliff.
登山者被迫在视觉悬崖处折返。
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2. The climber had to cross thevisual cliff to reach the summit.
攀岩者不得不穿过视觉悬崖到达山顶。
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3. Thedriver had to slow down due to thevisual cliff ahead.
驾驶员因为前方的视觉悬崖不得不减速。