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单词 sprag
释义
sprag (sprăg)
n.
1.
a. A piece of wood or metal wedged beneath a wheel or between spokes to keep a vehicle from rolling.
b. A pointed stake lowered at an angle into the ground from a vehicle to prevent movement.
2. A prop to support a mine roof.

[Perhaps of Scandinavian origin.]
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更新时间:2025/1/7 10:52:06