The countdown had gone off without trouble .The Restone booster for the take-off worked well.

问题描述:

The countdown had gone off without trouble .The Restone booster for the take-off worked well.

这次倒数记秒没有遇到任何麻烦,火箭助推器脱离顺利
另:Restone貌似吃拼写错了