Can you use an abacus, Mr. Cooper?

库珀先生，请问你会用算盘吗？

※Every kind of peaceful cooperation among men is primarily based on mutual trust and only secondly on institutions such as courts of justice and police.——Albert Einstein, American scientist 人类一切和平合作的基础首先是相互信任， 其次才是法庭和警察一类的机构。美国科学家 爱因斯坦.A.
※The best cure for the national economy would beeconomy.Ashoey Cooper, British novelist——拯救国家经济的最好办法就是节约。英国小说家  库珀  A

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