名词
中文翻译：环境
同义词：
['ambient', 'surroundings', 'environment']
例句：
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1.The umwelt of the city is constantly changing.
城市的周围世界不断变化。
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2. The scientist studied the effects of pollution on the umwelt.
科学家研究了污染对周围世界的影响。
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3. The umwelt of the forest is rich with life.
森林的周围世界充满了生命。