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The United States is responsible for the most space debris in space, followed by Russia and China.
太空中的空間碎片主要來源美國，其次是俄羅斯和中國。
There are more than 4,600 satellites orbiting Earth, along with more than 14,000 old rocket parts and other pieces of space junk.
太空中有4600多個衛星圍繞地球運轉，此外還有14000多個廢棄的火箭部件和其他太空垃圾碎片。
Experts are starting to worry that with so much junk being left behind collisions in space will increase and it could become too dangerous to leave Earth.
專家擔心它們碰撞后在太空所留下的垃圾將不斷增加，從而給地球安全帶來危險。
The orbital garbage moves at a speed roughly 10 times faster than a bullet and can stay in orbit for hundreds of years.
軌道垃圾運行速度是子彈的十倍，并且能夠在軌道中存留上百年。
譯文屬可可英語原創，未經允許，不得轉載。
