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单词
coalsack
释义
WordReference Random House Unabridged Dictionary of American English © 2024
Coal•sack
(kōl
′
sak′),
USA pronunciation
n.
[
Astron.
]
Astronomy
a dark nebula in the southern constellation Crux, whose dust particles obscure light from Milky Way stars behind it. Also,
Coal
′
Sack′.
Also called
Southern Coalsack.
coal
+
sack
1
1625–35
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更新时间:2025/8/1 19:08:48