大家都知道,打气筒是用来给车胎充气的,可有一次,我却意外地发现了打气筒的另一种用法。那是去年暑假,一天,爸爸妈妈出去了,我一个人在家写作文。谁知,我刚写到高潮部分,昨天新买的笔就不下水了。我很扫兴,把那枝不争气的笔狠狠地摔在地上,挠着头生闷气。可是,就这么扔了它也太 We all know that the pump is used to inflate the tire, but once, I found another accidental use of the pump. That was the summer vacation last year, one day, Mom and Dad went out and I wrote the essay at home. Who knows, I just wrote the climax part of yesterday, the new pen to buy no water. I am very disappointed, the pen that disappointing severely fell to the ground, scratching his head sulking. However, just throw it too