單詞
sprag
英 [spr?g]
美[spr?g]
基本信息
- n. 止輪墊（防止車子在斜坡往下滑）
- vt. 用止輪木使…停下
英英釋意
- 1. a chock or bar wedged under a wheel or between the spokes to prevent a vehicle from rolling down an incline
- 2. a wooden prop used to support the roof of a mine
sprag相關(guān)單詞