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单词
photic zone
释义
WordReference Random House Unabridged Dictionary of American English © 2024
pho
′
tic zone′,
[
Biol.
]
Ecology
the upper layer of a body of water delineated by the depth to which enough sunlight can penetrate to permit photosynthesis.
1970–75
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更新时间:2025/7/23 19:24:19