After dinner, father is blinking an eye to my uncannily, crooked head moves close to the water cup on the desk, resemble be like conversation of cup audition water, say to me next: "The water cup of our home learned a kind of skill that can let water handstand. " " ah? " I cry strangely. Father is smiling to say: "Water cup has a kind of magic power after replete water, a piece of white paper is put above, it is met a white paper grip, can let water handstand be in the cup, do not believe you to start work do this test. Do not believe you to start work do this test..
晚饭后，爸爸对我神秘地眨着眼睛，歪着脑袋凑近桌上的水杯，像在听水杯说话似的，然后对我说：“我们家的水杯学会了一种能让水倒立的本领。”“啊？”我奇怪地喊道。爸爸微笑着说：“水杯装满水之后有一种魔力，上面放一张白纸，它会把白纸吸住，能让水倒立在杯中，不信你动手做一下这个实验。”
Heard father's word, interest came on my horse, found experimental material by what father says rapidly: Cup of an a piece of white paper, water and a water. After preparing data, the experimental procedure operation that I say by father rises, full water pours in cautiously past water cup first, it is white paper lid next above water cup, water cup resembles a piquant little baby saying cock-a-hoop to paper: "Ha, let your look look next my competence! " I get double eye stare greatly careful composition observation, what did for fear that miss, cup of gradually my discovery water begins ability of put to good use, the paper of cup mouth is being gone to slowly inside water cup sunken. Then I am holding white paper skill in the palm to be water cup handstand slowly in sky single-handed, I open the hand that asking white paper easily gently finally, father reminds: "See careful drop, the hour that witnesses a miracle namely immediately! " white paper actually really by water cup grip, the water handstand inside water cup is in the cup. Wow, be too mysterious really!
听了爸爸的话，我马上来了兴趣，赶紧按爸爸说的找到了实验的材料：一张白纸、一个水杯和一盆水。准备好材料后，我按爸爸说的实验过程操作起来，先小心翼翼地往水杯里倒满水，然后将白纸盖在水杯上面，水杯像个调皮的小娃娃得意洋洋地对纸说：“哈哈，接下来就让你瞧瞧我的本领！”我把双眼瞪得大大地仔细观察，生怕错过了什么，渐渐地我发现水杯开始施展本领了，杯口的纸在慢慢地往水杯里面凹。接着我一手托着白纸一手慢慢地将水杯倒立在空中，最后我轻轻松开托着白纸的手，爸爸提醒道：“看仔细点，马上就是见证奇迹的时刻了！”白纸竟然真的被水杯吸住了，水杯里面的水倒立在杯中。哇，真是太不可思议了！
Father tells me, because white paper is affected by the exterior tension of water, with cup closemouthed intimate contact closes completely rise, it is certain to be formed to white paper up tensile, right now the intensity of pressure inside the cup is less than outside the cup, the pulling force of air intensity of pressure and water forms a resultant force, offsetted the gravity of the water inside the cup reachs a scrip oneself is gravitational, white paper suffers equilibrium, block water naturally in the cup to won't leak come down. It is so such ah!
爸爸告诉我，由于白纸受到水的表面张力影响，与杯口紧密接触完全闭合起来，并对白纸形成一定的向上拉力，此时杯内的压强小于杯外，大气压强与水的拉力形成一个合力，抵消了杯内水的重力及纸片自身重力，白纸受力平衡，自然就把水挡在杯子里不会漏下来。原来是这样呀！
Pass this test, what I discovered science is magical. Henceforth, my general learns well, probe more mystery!
通过这个实验，我发现了科学的神奇。今后，我将好好学习，探索更多的奥秘！(文/朱洛萁)