军事武器能将太空残骸追溯到棒球大小。

The military can track space debris as small as a baseball.

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发现号航天飞机不得不避开向它飞来的太空残骸。

The Shuttle Discovery had to dodge space debris flying towards it.

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NASA的太空作业首席助理Bill Gerstenmaier说，这是太空残骸最接近国际空间站的一次。

The US space agency's (Nasa) Associate Administrator for space Operations, Bill Gerstenmaier, said it was the closest a debris object had ever come to the station.

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