1. By all spacefaring measures, that's impressive — going from a standing start to a sprint in five years. 令人印象深刻的是：他们用五年的时间完成了所有的航天壮举，从起跑到冲刺！
911chaxun查询·英语单词大全
noun
1. danci.911cha.com
1. a voyage outside the Earth's atmosphere
Synonym: spaceflight space travel