The government is more focused on preventing new debris from forming than taking the trash out of orbit.
政府更关注的是防止新的碎片形成，而不是把垃圾带离轨道。
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The greatest concern the authors raise is space debris—pieces of "junk" that orbit the earth, with the potential to cause serious damage if they collide with operational units, including the ISS.
The greatest concern the authors raise is space debris-pieces of "junk" that orbit the earth, with the potential to cause serious damage if they collide with operational units, including the ISS.