A step (2.1) is arranged on the outer edge of the joggling die bush, and the inner hole (2.2) of the joggling die bush is an inverted truncated conical hole.

所述镦粗模垫的外缘设置有一台阶（2.1），镦粗模垫的内孔（2.2）为一截头倒圆锥孔。

So there will be a lot of joggling for position between these guys, kind of like boxers will do before they start their fight.

所以这些恐龙之间会为了有利位置而经常摇动，就像拳击手在开打之前那样。