2 natural protection should be used for belay anchors where at least 2 , preferably 3 , independent bombproof anchors can be used 2于天然支点上，应使用确保固定点，同时，该处应能使用至少两个极稳固的固定点，三个更好。
2.
In a close fight , the runner - up was " rhino horn stockpile management : minimum standards and best practices from east and southern africa . " previous winners have been " bombproof your horse " and " greek rural postmen and their cancellation numbers . 在2006年度英国“最古怪书名”评选中，牛角积蓄管理：从东方至南非的最低标准和最佳实践在激烈的竞争中最后屈居亚军位置。
