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noun | verb
thirling [θə:liŋ] n
gen. 钻〔凿〕穿; 贯通; 横巷; 交叉掘通
thirling v
tech. 两巷道掘通; 联络小巷; 掏槽落煤法; 巷道掘通 (隧道); 石板瓦钻孔; 连通道
thirl [θɜ:l] v
gen. 钻〔穿〕孔; 刺穿; 开掘联络巷道; 使震颤动; 使颤抖动
expl. 钻孔; 穿孔

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