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有一则流传甚广的故事：小甲和小乙结伴出游，在一个山口发现了老虎──而且这家伙好象正向他们靠近。经过一段短暂的恐慌之后，小甲快手快脚打开背包，拿出一双钉鞋来。小乙大惑不解：你怎么还不快跑？你还有时间换钉准吗？就算换上钉鞋，你跑得过老虎吗？面对小乙的连珠发
There is a widely circulated story: small A and small B travel together, found a tiger in a mountain pass - and this guy seems to be approaching them. After a short period of panic, the small armor quickly opened his backpack quickly and took out a pair of spikes. Small B puzzled: how do you not run fast? Do you still have time for nails? Even put on the spikes, you ran the tiger? The face of small B even beads