例外：如果球员因为在错误的地点进行击球而受罚，则不再根据未经允许进行替代球操作而额外受罚。
Exception: If a player incurs a penalty for making a stroke from a wrong place, there is no additional penalty for substituting a ball when not permitted.
动物实验共6只狗，研究组3只用气囊型假体替代一段胆总管，对照组3只用球瓣型假体。
The animal experiment had 6 dogs, 3 with air-bag replacement in research group, the others with ball-valve replacement in control.
他们告诉我，他们还造出了好几种替代系统，包括展出的那个具有旋转的玻璃球和高速放映机的完成品。
They had developed several alternative systems, they told me, including one that used a rotating mirror and a high-speed projector.
应用推荐