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单词
sound barrier
释义
sound barrier
n.
the high resistance of air to aircraft etc. moving at speeds near that of sound
音障,声障,声垒
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backbone
back-breaking
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back-crawl
back cross
backdate
back door
backdown
back down
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backer
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backfill
backfire
backflip
back-formation
backgammon
background
background music
backhand
backhanded
backhander
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更新时间:2026/5/16 21:11:23