command and service module造句

例句与造句

1. Apollo 4 and Apollo 6 had been " A " missions, unmanned tests of the Saturn V launch vehicle using an unmanned Block I production model of the Apollo Command and Service Module in Earth orbit ., scheduled for October 1968, would be a manned Earth-orbit flight of the CSM, completing the objectives for Mission " C ".
2. It's difficult to find command and service module in a sentence. 用command and service module造句挺难的
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