4日17日，长征七号遥二运载火箭与天舟一号货运飞船组合体在垂直转运中。当日7时30分，承载着长征七号遥二运载火箭与天舟一号货运飞船组合体的活动发射平台驶出总装测试厂房，垂直转运至发射区。天舟一号货运飞船计划4月20日至24日择机发射。[新华社 琚振华 摄]
Photo taken on April 17, 2017 shows the cargo spacecraft Tianzhou-1 being transferred with a Long March-7 Y2 carrier rocket from the testing center to the launch zone in Wenchang, south China's Hainan Province. China's first cargo spacecraft Tianzhou-1 is to be launched into space between April 20 and 24, according to the office of China's manned space program. (Xinhua/Ju Zhenhua)