Nearly two tons of nuclear-reactor fuel have already been put into orbit around the Earth, and the chances of a collision involving such material increase greatly as the amount of both space debris and satellites continue to rise.
as the amount of both space debris and satellites continue to rise
as the rise continues in both the amount of satellites and space debris
as the amount of space debris and the number of satellites continue to rise
with the continually increasing amount of space debris and the number of satellites
with the amount of space debris continuing to increase along with the number of satellites
as表示因为 卫星是可数的 需要用number
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