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Great inventions
偉大的發明
Great inventions change the world. They help people live a better life.
偉大的發明改變了世界。它們幫助人們過上更好的生活。
The following are three of the most important inventions in history.
下面，是歷史上三個最重要的發明。
The wheel
車輪
The wheel is perhaps the greatest invention in history.
車輪也許是歷史上最偉大的發明。
After its invention, travelling became faster and more comfortable.
在其發明后，旅行變得更快，更舒適。
A few thousand years ago, people started to use wheels on carriages.
幾千年前，人們開始在車上使用車輪。
In the early 19th century, the first trains began to carry passengers.
19 世紀初，第一列車開始載客。
At the start of the 20th century, cars became popular.
20 世紀初，汽車開始流行。
Without the wheel, we would not have these inventions.
如果沒有車輪，我們也就不會有這些發明了。
The telephone
電話
Alexander Graham bell invented one of the first practical telephones in 1876.
1876 年，亞歷山大·格雷厄姆·貝爾發明了第一部實用的電話。
Since then, people have been able to speak to each other over long distances.
自那時起，人們實現了長距離相互通話。
Today millions of people across the world own mobile phones.
今天世界各地上數以百萬的人擁有自己的移動電話。
They allow people to keep in touch with each other anytime, anywhere.
它們使人可以彼此之間隨時隨地保持聯系。
The light bulb
電燈
Thomas Edison developed the first practical light bulb in 1879.
1879 年，托馬斯·愛迪生研制出第一個實用的電燈。
Before the invention of the light bulb, people had to use oil lamps, gas lamps or candles to see at night.
在電燈發明之前，人們在夜里看東西不得不依靠油燈、煤氣燈或蠟燭。
With light bulbs, people can do as many things in the evenings as they can in the daytime.
（自從）有了電燈，人們可以在晚上如同白天一樣做很多的事情。
Can you imagine living without them?
你能想象離開它們后的生活嗎？
