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单词
ultrabasic
释义
WordReference Random House Unabridged Dictionary of American English © 2024
ul•tra•ba•sic
(ul′trə bā
′
sik),
USA pronunciation
adj.
Geology, Rocks
(of rocks) containing iron and magnesium, with little or no silica.
Also,
ultramafic.
ultra
- +
basic
1890–95
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更新时间:2025/11/15 5:45:46