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
They're both very good buys.
这两栋都是价格便宜的。
Never trust another what you should do yourself.
自己应该做的事,决不要委托别人做。
and so the tools of long ago have remained when even the bones of the men who made them have disappeared without trace.