NASA says the three U.S. astronauts will team up to test the Crew Dragon's systems and carry out research and maintenance operations.

美航空航天局说，三名美宇航员将联合测试" 龙" 号机组的系统，并进和维护工作。

Within a few decades, the moon may be bustling with mining operations, research stations, and tourist routes alongside a construction yard under an orbiting space port.

几十年之内，月球上可能会布满采矿作业、和旅游路线，旁边是轨道太空港下的建筑场。