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x-ray astronomer
释义
WordReference Random House Unabridged Dictionary of American English © 2024
x
′
-ray astron′omy,
Astronomy
the branch of astronomy that studies celestial objects by means of the x-rays emitted by them. Cf.
x-ray
(def 1b).
1960–65
x
′
-ray astron′omer.
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pusillanimously
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更新时间:2026/8/6 23:17:50