空间站至少可以工作15年，但如果对其磨损或毁坏的零件进行维修和更换的话，它的寿命能维持数十年。
The station has been designed to operate for at least 15 years. But it could last for decades if parts are repaired and replaced as they wear out or are damaged.
有螺纹的孔和螺栓应完好，并无任何毁坏或磨损。
Threaded holes and studs shall be in good condition and not damaged or worn in any way.
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