The following days were spent servicing the engines and checking the instruments.

接下来的几天，飞机需要维修发动机，检查仪器。

Russian state space agency Roscosmos also says it will stop servicing rocket engines it had previously delivered to the U.S.

俄罗斯国家航天局还表示，将停止向此前交付美国的火箭发动机提供服务。