countersink
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(pt -sank /-sNk; -9sANk/, pp -sunk ) [Tn usu passive通常用於被动语态 ]
1 enlarge the top of (a hole) so that the head of a screw or bolt fits into it level with or below the surrounding surface 钻埋头孔.
2 insert (a screw or bolt) into such an enlarged hole 将(螺钉或螺栓)旋入埋头孔中.
🗣️ 情景例句
OK. Let's talk.
好, 我们谈谈吧。
Beard the lion in his den.
老虎头上捉虱;太岁头上动土。
A little. He fell and hit his leg on a table.But he's OK now.