Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
I felt differently at that time.
那时我的感觉又不一样了。
No man is so old, but thinks he may yet live another year.
人越活越想活。
let alone distances of tens or hundreds of light years.
更不用说几十光年或几百光年远的地方了。