countersink
v
(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
He couldn't teach such dull children.
他教不了这么笨的孩子。
He took two weeks off in August.
他在八月份休假两星期。
(laughing) Really? I've never heard of that before! Thank you very much! Goodbye!