The Space Pen

太空人tài kōng rén在zài环绕huán rào地球dì qiú时shí发现fā xiàn，普通pǔ tōng原子笔yuán zǐ bǐ在zài失重shī zhòng状态zhuàng tài下xià无法wú fǎ使用shǐ yòng。When astronauts were orbiting the Earth, they discovered that ordinary ballpoint pens could not be used in a zero-gravity environment.于是yú shì，一群yī qún科学家kē xué jiā耗费hào fèi多年duō nián时间shí jiān，投入tóu rù大量dà liàng资金zī jīn，终于zhōng yú研发yán fā出chū一种yī zhǒng神奇shén qí太空笔tài kōng bǐ。So, a group of scientists spent many years and invested a large amount of money to finally develop a remarkable space pen.无论wú lùn零重力líng zhòng lì、极端jí duān温度wēn dù，甚至shèn zhì倒着dào zhe写xiě，都dōu能néng流畅liú chàng书写shū xiě。It can write smoothly regardless of zero gravity, extreme temperatures, or even when writing upside down.

然而rán ér，在zài这一切zhè yī qiè之前zhī qián，太空人tài kōng rén怎么zěn me解决jiě jué这个zhè ge问题wèn tí呢ne？However, before all of this, how did astronauts solve this problem?他们tā men用yòng铅笔qiān bǐ。They used pencils.