长征五号CN5B，准备好出发搭载梦天实验舱.
Ready to go. Long March 5B (CZ5B) Y4 rocket, which carries Mengtian laboratory cabin module, has been rolled out from VAB to the launch pad at Wenchang launch center, Hainan. It’ll send Mengtian on October 31 to Tiangong Space Station (CSS).
