When attending composition class once, I walk into a classroom, discovery put a few stage property on desk. Dry what uses I do not know, I sit to wait for a teacher to come to the home over lecture.
有一次上作文课的时候，我走进教室，发现课桌上放了一些道具。我不知道是干什么用的，我就坐在那儿等老师来家来讲课。
The teacher came, the teacher took a bottle, a heater, a water, on desk have a few balloons and an adhesive plaster.
老师来了，老师拿了一个瓶子，一个加热器，一盆水，课桌上的有几个气球和一个胶带。
I am thinking: Are these “ things to follow science to concern? But, are we attending composition class? Mr. ” says: “ classmates, today, we will do scientific test. I think ” : “ is so such ah! How do I say to have so much thing! ”
我在想：“这些东西不是跟科学有关吗？可是，我们在上作文课呀？”老师说：“同学们，今天，我们来做科学试验。”我想：“原来是这样呀！我怎么说有这么多的东西呢！”
The test that “ should do today is heat bilges cold shrink, I will to you be done. Mr. ” says. The teacher took a water above all, put water to heater next, crossed full marks / feel time is about the same a little while, put water to the table, include the balloon to bottle again then, reoccupy adhesive plaster has stuck the balloon, put bottle in water finally, magical one act happened, balloon actually from egg size slowly the fat baby that became a round billow, I cannot help wanting: The balloon did not use pump to encourage already, was not blown by the mouth again, how can you greaten? I do not understand namely.
“今天要做的实验是热胀冷缩，我来给你们做一下。”老师说。老师首先拿了一盆水，然后把水放到了加热器上，过了满分/一会感觉时间差不多了，就把水放到了桌子上，接着又把气球包到了瓶子上，再用胶带把气球贴好，最后把瓶子放到水中，神奇的一幕发生了，气球竟然从鸡蛋大小慢慢的变成了一个圆滚滚的胖娃娃了，我忍不住想：气球既没有用打气筒打气，又没有被嘴吹，怎么会变大呢？我就是不明白。
I classessed are over, I asked mother, mom says: Because heat bilges,“ is then cold the principle that shrink, the particle in one hot air can heave come, the particle in one cold air can shrink very smally. ” from now on, I knew heat bilges cold the principle that shrink.
我放学了，我问了妈妈，妈妈说：“那是因为热胀冷缩的原理，一热空气里的粒子就会胀起来，一冷空气里的粒子就会缩得很小。”从此，我就知道了热胀冷缩的原理。
There still are a lot of interesting scientific little tests beside our, I like scientific little test.
我们的身边还有很多有趣的科学小实验，我喜欢科学小实验。(文/孙田)