学科分类
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1 个结果
  • 简介:AlmosteveryoneinChinaknowsthisstory,evenelementaryschoolpupils:Onceuponatime,therewasaweaponsalesmanclaimingwithconfidencetoonecrowdthatallhisspearswerecapableofpiercingeveryshieldthatexistedintheworld,thenheturnedaroundandtoldtheothercrowdmysteriouslythatallhisshieldswerenotpenetrable.Abystanderwhoheardbothclaimsaskedhim,"Howaboutstabbingyourshieldswithyourspears?"Itwasindeedanunexpectedquestionthatmadetheeloquentsalesmanmuterightonthespot.Sincethen,theChinesepeoplehavecalledcontradictionas"mao-dun",whichliterallymeans"thespear(pronouncedas"mao")andshield(pronouncedas"dun")".

  • 标签: 生命科学 科学研究 思维方式 DNA 染色体