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The sudden obscuration of the mountain peak by low clouds surprised the hikers.
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The sudden obscuration of the mountain peak by low clouds surprised the hikers.
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Related words
obscuration
Noun
countable
uncountable
Japanese Meaning
隠されて見えにくい状態、周囲から遮られた状態 / 煙探知器などで用いられる、煙が光を吸収する割合に基づく単位（単位長あたりの吸収率を示す、例：% obs/ft, % obs/m）
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