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单词
penstock
释义
penstock
n.
  
1.
a sluice; a floodgate.
  
2.
US a channel for conveying water to a water-wheel.
Etymology
: PEN(2) in sense 'mill-dam' + STOCK
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obstinate
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obvious
OC
oc-
ocarina
Occam's razor
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occasional
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更新时间:2026/2/5 2:07:58