The Space Pen
Ballpoint pens fail in zero gravity, so scientists spent years and a fortune on a pen that writes anywhere. The astronauts' first solution was much simpler.
太空人在环绕地球时发现，普通原子笔在失重状态下无法使用。When astronauts were orbiting the Earth, they discovered that ordinary ballpoint pens could not be used in a zero-gravity environment.于是，一群科学家耗费多年时间，投入大量资金，终于研发出一种神奇太空笔。So, a group of scientists spent many years and invested a large amount of money to finally develop a remarkable space pen.无论零重力、极端温度，甚至倒着写，都能流畅书写。It can write smoothly regardless of zero gravity, extreme temperatures, or even when writing upside down.
然而，在这一切之前，太空人怎么解决这个问题呢？However, before all of this, how did astronauts solve this problem?他们用铅笔。They used pencils.
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