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However, as Mr Bruner and Mr Carr demonstrate in their well-timed book, history shows that contagion has predated computers. 然而，就象布魯納和卡爾在他們很合時(shí)宜的著作中所言，歷史表明，早在有電腦之前就有危機(jī)傳播現(xiàn)象了。