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单词
step-down
释义
step-down
/step"down'/
,
adj. Elect.
serving to reduce or decrease voltage:
a step-down transformer.
[
1890-95; adj. use of v. phrase
step down
]
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Upjohn
upkeep
upland
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upland cotton
upland sandpiper
uplift
uplifted
uplifter
uplifting
uplight
uplink
upload
upmanship
upmarket
upmost
Upolu
upon
up-or-out
upper
upper air
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upper arm
upper atmosphere
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更新时间:2025/12/7 10:26:08