Last year, two satellites even collided, showering their orbit with tiny fragments that now pose additional risk to operational spacecraft.

去年甚至还发生了两颗卫星相撞的事件，碰撞所产生的碎片散布在整个轨道上，更增加了其他航天器的运行风险。

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Last year, two satellites even collided, showering their orbit with tiny fragments that now pose additional risk to operational spacecraft.

去年甚至还发生了两颗卫星相撞的事件，碰撞所产生的碎片散布在整个轨道上，更增加了其他航天器的运行风险。

youdao