Attend class today, the teacher is taking an a bottle of cup of a paper, water, lighter and candle, still take wore to go mysteriously, classmates immediately gabble comment rises, guess a teacher what is this to should work?
今天上课，老师拿着一只纸杯、一瓶水、一只打火机和蜡烛，还带着一丝神秘走了进来，同学们顿时七嘴八舌议论起来，猜测老师这是要干什么呢？
The teacher makes everybody quiet: "Today, we should do an interesting test -- burn the paper cup that does not wear. " everybody listened very excited, expecting an experiment to begin quickly.
老师让大家安静：“今天，我们要做一个有趣的实验——烧不着的纸杯。”大家听了很兴奋，期待着实验快点开始。
See full water pours in cup of teacher preexistence paper only, ignite the candle again, good fun began. The eye is seeing, the teacher put paper cup unconcernedly, immediately, there is a bit to begin to become yellow below paper cup, right now classmates can cannot help, be opposite in succession the teacher is blusterous: "Become yellow below teacher paper cup! " the teacher is carried look, as expected right, paper cup bottom becomes yellow really, but the teacher does not no hurry unbearably the ground says: "Do not have a thing, paper cup won't be broken, you are at ease! " screen stays in everybody breath, flame of dead dead gaze at. Fire, in candle top, jumping beautiful dancing; Fire, wear in the dance with paper cup happy bottom silently; Fire, blazing fire, in as if in caky time, cup of merciless paper of the move that lick lap is bottom. But, a bit of that paper cup did not want flaming meaning.
只见老师先在纸杯里倒满水，再把蜡烛点燃，好戏就开始了。眼见着，老师漫不经心地把纸杯放了上去，顿时，纸杯下面有一点开始变黄了，此时同学们可忍不住了，纷纷对老师叫嚷：“老师纸杯底下变黄了！”老师提起来一看，果然没错，纸杯底部真变黄了，但老师不慌不忙地说：“没事的，纸杯不会破的，你们就放心吧！”大家屏住呼吸，死死盯住火苗。火，在蜡烛顶端，跳着优美的舞蹈；火，静静地在纸杯底部欢乐的舞着；火，炽燃的火，在仿佛凝固的时间中，无情的舔舐着纸杯底部。但是，那纸杯丝毫没有要燃烧的意思。
At this moment teacher the temperature to prove flame, took a piece of white paper again, put toward the candle, when saying late, fast in those days, a moment ago was by exasperate blaze above paper burned to rise immediately, frightened us to jump greatly indeed.
这时老师为了证明火苗的温度，又拿来了一张白纸，往蜡烛上一放，说时迟，那时快，刚才被激怒的火焰在纸上面立马燃烧了起来，着实吓了我们一大跳。
At this moment, the teacher tells us why paper cup burns do not wear: Because not only it is paper, always burn to need constant temperature, this temperature makes catch fire dot. Because full water is contained in paper cup, when igniting paper cup with flame, the water in the cup absorbed much quantity of heat, and catch fire without what achieve it dot, so paper cup won't burn.
这时，老师告诉我们为什么纸杯烧不着：因为不光是纸，凡是燃烧都需要一定的温度，这个温度叫着火点。因为纸杯里盛满水，当用火苗点燃纸杯时，杯里的水吸收了大量的热量，而没有达到它的着火点，所以纸杯不会燃烧。
The suddenly be enlightened after we listen, did not think of a so little water, can have so powerful ability however.
我们听后恍然大悟，没想到这么小小的一口水，却能有这么强大的能耐。