用summary。summary作名词讲时是摘要,概要的意思。柯林斯词典里对summary的解释是:1).Asummaryofsomethingisashortaccountofit,whichgivesthemainpointsbutnotthedetails.2).Youuse"insummary"toindicatethatwhatyouareabouttosayisasummaryofwhathasjustbeensaid.而conclusion一般指“结论,推论,结尾”,表示“结尾”时同“end”。柯林斯辞典里对conclusion的解释是:Whenyoucometoaconclusion,youdecidethatsomethingistrueafteryouhavethoughtaboutitcarefullyandhaveconsideredalltherelevantfacts.