今天，妈妈给我买了一支自动铅笔，它使用起来很方便，你只要打开它的小“礼帽”，往笔杆里投一根直径0。7毫米的铅芯，再把小“礼帽”戴上，往下按，细细的铅芯就从笔头里露出来了。
Today, my mother bought me an automatic pencil. It's very convenient to use. You just need to open its little "hat" and throw a 0 diameter pencil into the penholder. 7 mm lead core, then put on the small "hat" and press down, the thin lead core will be exposed from the pen head.
如果你写错了字，可以拨开“礼帽”，里面会露出一块用“礼帽”裹起来的橡皮，可我舍不得用它，因为用完后就没有了。因为有这支铅笔，每次考试的前一天晚上我就不在为考试削好铅笔了，它给我节省了不少时间。
If you write a wrong word, you can open the "hat", which will show a piece of rubber wrapped in the "hat", but I can't bear to use it, because it's gone after use. Because of this pencil, I will not sharpen the pencil for the exam the night before each exam. It saves me a lot of time.