... purity 纯度; 纯净 purpose-built vehicle 特殊用途车辆 PVC 聚氯乙烯 ...
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As for the Space launch System (SLS) designed to launch the Orion Multi-purpose Crew vehicle, Muncy questioned whether the launch vehicle would get built.
至于为发射猎户座多用途乘员运载器设计的航天发射系统(SLS)，Muncy质疑运载火箭是否能得到建造。
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