不存在“占用了这次额外的攻击”
绊摔 (Ex):猎豹一旦通过其爪抓或啮咬攻击击中对手就可通过一个即时动作对对手尝试展开拌摔
Trip (Ex): A cheetah that hits with a claw or bite attack can attempt
to trip the opponent (+3 check modifier) as a free action without
making a touch attack or provoking an attack of opportunity. If the
attempt fails, the opponent cannot react to trip the cheetah.
这个摔绊本身就是一个额外的自由动作,它不占任何其他动作。而且本身额外动作也是各算各的,不存在一个额外动作挤掉另一个额外动作的问题,除非特别说明