名词
中文翻译：无光区
同义词：
['dark zone', 'anoxic zone']
例句：
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1.The aphotic zone is where the water is too dark to see anything.
无光区是水太暗看不到任何东西的地方。
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2.The study of the aphotic zone has important implications for understanding the Earth's climate.
对无光区的研究对于理解地球气候具有重要意义。
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3. The researchers found that the aphotic zone was shrinking due to human activities.
研究人员发现由于人类活动，无光区正在缩小。