if you don t clean this shirt today，这时爸爸来了，发现了除去污渍的好方法你就别想吃饭。我用洗衣粉洗，
小时候，我特别调皮，经常搞恶作剧，有一次甚至把我的一件白衬衫做了美容手术，用毛笔把衬衫弄成了“黑白配”。爸爸见了很生气，说：“小子，如果你今天不把这件衬衫洗干净，你就别想吃饭。”这下我可该怎么办呢？
when i was a child， i was very naughty and often played pranks. once i even had a cosmetic operation on a white shirt and made it black and white with a brush. dad was very angry when he saw it and said， "boy， if you don t clean this shirt today， you don t want to eat." what should i do now?
首先，我用洗衣粉洗，接着又用肥皂洗，都无起色。我想没有希望了，于是又开始新的恶作剧，我拿来一大把盐放在了衣服上，这时爸爸来了，我又假装在搓衣服，这样以来想躲过爸爸的责骂，二来期待着奇迹发生。我搓了半个多小时，手搓红了，脚也麻了，我拿出衣服一看，嘿！奇迹出现了！墨迹不见了，衬衣又变白了。
first of all， i wash it with washing powder， then with soap. it doesn t improve. i thought there was no hope， so i started a new prank. i took a lot of salt and put it on my clothes. then my father came， and i pretended to rub my clothes， so i wanted to avoid my father s scolding. secondly， i was looking forward to the miracle. i rubbed for more than half an hour. my hands were red and my feet were numb. i took out my clothes and looked. hey！ there s a miracle！ the ink is gone， and the shirt is white again.
我拿着衣服去领赏，一桌腾腾的饭菜摆在我的面前，我狼吞虎咽地吃着，爸爸却一直在拿着衬衫发呆，他本想教育我学好，谁知我把衣服搓干净了，他的计划泡汤了。后来，我从书上得知，盐的化学名叫氯化钠，是一种晶体，它不仅可以做调料，还可以除污渍。氯化钠与水溶合在一起具有漂白作用，能够除去衣服上的污渍。盐还是一种很好的家用灭火剂，食盐在高温火源下，可迅速分解为氧化钠、通过化学作用吸收燃烧中的自由基，抑制燃烧的进行，颗粒盐更是有效的灭火剂，因为颗粒含量较多，在高温下吸热膨胀，破坏了火苗的形态，同时发生吸热反应，稀释燃烧区的氧气浓度，所以能很快地灭火。
i took my clothes to receive the reward. a table of steaming food was placed in front of me. i was devouring it， but my father was dazed with his shirt. he wanted to teach me how to learn well. but i rubbed my clothes clean， and his plan was in vain. later， i learned from the book that the chemical name of salt is sodium chloride， which is a crystal. it can not only be used as seasoning， but also can remove stains. sodium chloride and water can be dissolved together to bleach and remove stains on clothes. salt is also a good household fire extinguishing agent. under the high temperature fire source， salt can be rapidly decomposed into sodium oxide， absorb the free radicals in the combustion through chemical action， and inhibit the combustion process. particle salt is more effective fire extinguishing agent， because the particle content is more， it absorbs heat and expands at high temperature， destroys the shape of the fire， and at the same time， it generates heat absorption reaction to dilute the oxygen concentration in the combustion area， so it can put out the fire quickly.
看来，生活中处处有学问，只要用心观察和学习，就能学到不少东西。
it seems that there is learning everywhere in life. as long as we observe and study hard， we can learn a lot.
