洗手液的配制及性能测定

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1、洁白的牙齿——良好的第一印象WhiteTeeth–GoodFirstImpression洁白的牙齿——良好的第一印象Asmuchaswetelleachotherthatit’swhatisontheinsidethatcounts,thehardtruthisthatyouroutwardappearanceiswhatyouwilloftenbejudgedon.Whiteteethcanplayanimportantpartinagoodfirstimpression,openingimportantdoorsinyourlife.正如我们所说，内在很重要，但残酷的事实却

2、是人们往往以貌取人。若要给别人留下良好的第一印象，洁白的牙齿发挥着重要的作用，为你的生活开启重要大门。Itishumannaturetoanalysevisualinputandmakedecisionsoncharacterbeforeasinglewordisspoken.Mostpeopledon’thavethemoneyorthedesiretoundertakepainfulandexpensivesurgery.Thebestwaytomakeagoodimpressiononafirstdate,jobintervieworimportanteventistol

3、ookthebestyoucan.Properclothing,groomingandhygieneareimportant,andabrightsmilecanbeoneofthebestkeystoapositiveimpression.Knowingyourteetharesparkingcanalsohelpyouexudeconfidenceinanysituation.人的本性是在开口说话之前分析自己所见，并对其品质做出判断。大多数人没有足够的资金或愿望去做痛苦且昂贵的手术。若要在第一次约会，面试或重要活动给人留下好印象，最好的办法是呈现最好的自己。合适的服装，仪容

4、与个人卫生都很重要，灿烂的笑容是给人留有好印象的关键之一。你洁白发亮的牙齿也可以帮助你在任何情况下散发出自信。Thefirstkeyisexaminingyourhabits.Herearesomeregulareverydaycausesofdiscolorationandwhatyoucandoaboutthem:首先要检查你的习惯。下面是导致牙齿不白的日常原因，针对这些原因，你可以做以下事情：Coffee咖啡Coffee–Intoday’sfast-paced,low-sleepworldcoffeehasbecomeadailynecessityformanybusyp

5、eople.Thedarkcolorofcoffeewillstainanysurface,whetherit’sat-shitoryourpearlywhites.Themoreyoudrinkthemoreyourteethwillbestained.Ifyouareafrequentcoffeedrinker,keepingupfrequentbrushingandgoodoralhygienewillhelpslowthestainingprocess.咖啡——在当今快节奏，少睡眠的世界，咖啡已经成为许多忙碌之人日常生活的必需品。咖啡的深色会给任何表面染上色，无论是T恤

6、还是你的牙齿。你喝得咖啡越多，你的牙齿越不洁白。如果你经常喝咖啡，保持经常刷牙和良好的口腔卫生有助减缓牙齿着色过程。Cola可乐Cola–ThepopularityofColaissomethingthathelpskeepdentistsinbusiness.Notonlydotothesugarsincolawearawaytoothenamelandcontributetocavities,butthedarkcolormakesthemanotherprimeculpritintoothstaining,forthesamereasonsascoffee.可乐——可口可

7、乐的流行真是让牙医们忙得不亦乐乎。可乐里面的糖分不仅磨损牙釉质，还引起蛀牙，其深色也使它成为牙齿变色的另一个元凶，这一点，和咖啡使人牙齿变色的原因如出一辙。FruitJuice果汁FruitJuice–Anydarkfruitjuicewillstainyourteeth,themostobviousonebeinggrapejuice.Grapejuiceisfullofanthocyanins,whichgivesgrapestheirpurpleorredcolors.Anthocya