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Chiefly Biology. A period of darkness, especially one that is artificially imposed; an artificial night.
1930s (in an earlier sense). From scoto- + phase.
雅致网英汉双解词典包含236457条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。