又要去上学了，又要背起我那沉重的书包了，每当背着我那沉重的书包，感觉我的背都要压弯了。这时候我就想啊：“能不能发明一个可变大变小的书包呢？”
I have to go to school again and pick up my heavy backpack. Every time I carry my heavy backpack, I feel like my back is bending. At this moment, I thought to myself:; Can we invent a backpack that can change size? ”
这个书包的外形应该和普通书包一样，只是多了两个按钮，可变换书包大小。它功能得齐全。当你把书装进书包后，只需按一下变小按钮，书包就变得只有手提包那么大了。再按一下变大按钮，书包就又变回普通书包一样大了。
The appearance of this backpack should be the same as a regular backpack, except for two buttons that can change the size of the backpack. It is fully functional. After you put the book into your backpack, just press the shrink button and the backpack will become as big as a handbag. Press the enlarge button again, and the backpack will become as big as a regular backpack again.
它最神奇的功能当属“语音播报”和“记忆功能”了。假如你有书没有带，它就会发出警报提醒你：“主人，你的语文书还没有装进来。”如果你刚做过的题写错了它会迅速提醒你：“这不是刚才刚做了一遍的吗？”如果你有题不会写，而你又抄手机的话它会立刻发出警报：“主人，请自己认真思考。”要是你写作业姿势不对它也会马上提醒你：“主人，写作业姿势不对请坐端正。”你写完作业了它可以给你讲故事、唱歌、说说新闻……
Its most magical function is undoubtedly; Voice Broadcast” And“ Memory function; That's it. If you don't bring a book, it will sound an alarm to remind you:; Master, your Chinese book hasn't been loaded yet. ” If you make a mistake in the question you just did, it will quickly remind you:; Didn't you just do it again? ” If you don't know how to write a question and you copy your phone, it will immediately sound an alarm:; Master, please think carefully for yourself. ” If you do your homework in the wrong posture, it will immediately remind you:; Master, if your posture is not correct when doing homework, please sit upright. ” After you finish your homework, it can tell you stories, sing songs, and tell you news; …
怎么样？这样一个像伙伴一样，既功能齐全又可变大变小的书包，你是不是心动且想要呢？如果你也想要一个这样的书包，那就让我们一起努力，好好学习吧！争取用我们的知识把想象变成现实。
What about? Do you feel tempted and want a backpack that is like a companion, with complete functions and adjustable sizes? If you also want a backpack like this, let's work hard together and study hard! Strive to use our knowledge to turn imagination into reality.