俄国作家托尔斯泰在《我的忏悔》中,讲了这样一个故事:一个男人被一只老虎追赶而掉下了悬崖。庆幸的是,在跌落的过程中,他抓住了一棵生长在悬崖边上的小灌木。此时,他发现,悬崖上的那只老虎仍在盯着他;低头一看,崖下竟还有一只老虎;更糟的是,两只老鼠正在啃咬悬着他生命的小 Tolstoy, the Russian writer, tells a story in My Confession: A man is chased by a tiger and falls off a cliff. Fortunately, during the fall, he caught a small shrub growing on the edge of a cliff. At this moment, he found that the tiger on the cliff was still staring at him. When he looked down, there was actually another tiger on the cliff. Even worse, two rats were biting over his life