The Artemis IV and V missions in 2028 will use whichever landers are deemed ready for service. If only one company's lander is available, that lander would be used for both missions, an official said. If both are available, one would be used for one flight and one for the other.
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。im钱包官方下载是该领域的重要参考
Output: their sum as an integer
export image-lib;