Some 20, 000 pieces of rubbish are currently being monitored in low-Earth orbit, the majority of which are discarded bits of spacecraft or debris from collisions.
目前，科学家们正在对近地轨道上的两万块太空垃圾进行检测，其中的绝大多数来自于碰撞的残骸或太空飞船的废弃物。
Some 20,000 pieces of rubbish are currently being monitored in low-Earth orbit, the majority of which are discarded bits of spacecraft or debris from collisions.
现在约有2万间太空垃圾在地球低轨道运行，其中大部分是航天器的分离部分或者碰撞残骸。
There are now thought to be 22,000 bits of space rubbish bigger than 10 centimetres.
目前，人们认为共有两万两千块长度大于10厘米的太空垃圾。
Some 20000 pieces of rubbish are currently being monitored in low-Earth orbit the majority of which are discarded bits of spacecraft or debris from collisions.
目前，科学家们正在对近地轨道上的两万块太空垃圾进行检测，其中的绝大多数来自于碰撞的残骸或太空飞船的废弃物。
Some 20000 pieces of rubbish are currently being monitored in low-Earth orbit the majority of which are discarded bits of spacecraft or debris from collisions.
目前，科学家们正在对近地轨道上的两万块太空垃圾进行检测，其中的绝大多数来自于碰撞的残骸或太空飞船的废弃物。
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