自行车是一种非常常见的交通工具，但是你知道自行车的发明者是谁吗？下面就让我们来了解一下。

自行车的发明者是德国人卡尔·冯·德莱西。他于1817年发明了一种“脚踏车”，即由两个轮子组成，中间有一根木棍，人们可以用脚来踩动这根木棍，从而使自行车向前行驶。

随着时间的推移，自行车逐渐发展成为了我们现在所熟知的样子。如今，自行车已经成为了人们日常生活中不可或缺的一部分。

总的来说，德国人卡尔·冯·德莱西是自行车的发明者，他的发明改变了人们的出行方式，也给我们带来了很多方便。

The inventor of the bicycle was Karl von Drais, a German. He invented a 'pedalless bicycle' in 1817, which consisted of two wheels and a wooden stick in the middle. People could use their feet to pedal the stick and make the bicycle move forward.

Over time, the bicycle gradually developed into the form we now know. Today, bicycles have become an indispensable part of people's daily lives.

In conclusion, Karl von Drais, a German, is the inventor of the bicycle. His invention changed the way people travel and brought us a lot of convenience.