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单词
free fall
释义
free fall 1 movement through air or space under the force of gravity alone 自由降落. 2 part of a parachute jump before the parachute opens 降落伞张开前的降落.
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uproariously
uproot
upset
upshot
upside-down
upstage
upstairs
upstanding
upstart
upstream
upsurge
upswing
uptake
uptight
up-to-date
up-to-the-minute
uptown
upturn
upturned
upward
upward mobility
upwards of
upwind
uranium
urban
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更新时间:2026/1/27 5:40:30