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单词
rockoon
释义
rock·oon
(r
ŏ
-k
n
)
n.
A device used for high-altitude sounding, composed of a small, solid-propellant rocket that is launched from a balloon.
[
ROCK(ET)
1
+
(BALL)OON
.]
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更新时间:2025/6/5 14:57:58