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　　18-2a/29 Ball Dislodged from Tree; Replacement of Ball Not Possible
　　Q: A player, believing his ball is lodged in a tree, shakes the tree in order to dislodge it. His ball falls to the ground. According to Decision 18-2a/28, the player incurs a penalty of one stroke under Rule 18-2a and must replace his ball. Suppose, however, that the player cannot replace his ball either: 　　

　　(1) because the spot where it lay in the tree is not determinable, or
　　(2) because the ball fails to remain on the correct spot when replaced, or
　　(3) because the player cannot reach the spot where the ball lay.

　　How should the player proceed in each of these three circumstances?

　　A: Rules 20-3c and -3d would normally cover circumstances (1) and (2), but these Rules do not contemplate a situation such as the one described. Accordingly, in equity (Rule 1-4), in the first two circumstances the ball must be placed in the tree as near as possible to the spot from which it was moved, and in the third circumstance the player must proceed under the unplayable ball Rule, incurring an additional penalty stroke.

　　18-2a/29 球从树上离开了；不可能把球放回原处

　　问：一名球员认为他的球停在了一棵树上，为了把球弄下来，他摇动树。他的球掉在了地上。根据判定18-2a/28，球员按照规则18-2a会被罚一杆，而且必须把球放回原处。不过，球员不能把球放回原处：

　　（1）因为无法确定球原来在树上所停的地点，或者
　　（2）因为把球重新放回原处时无法保持正确的位置，或者
　　（3）因为球员不能到达球原来的地点。

　　在上述三种情况下，球员应该怎么处理？

　　答：规则20-3c和-3d通常能包括（1）和（2）的情况，但这些规则没有考虑到上述的情况。因此，本着公正的原则（规则1-4），在前两种情况下，球必须放回尽量接近移动前的位置。在第三种情况下，球员必须按照不可打之球的规则进行处理，还要加罚一杆。

　　（为避免产生歧义，请以英文原文为准。）
　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　　（golftime·陈艳编译）