Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
How old are you, anyway?
那……你多大了？
We are sorry to delay the shipment because our manufacturer has met unexpected difficulties.
恕延期货船，因为我们厂家遇到了预料不到的困难。
and the existence of underwater features of considerable magnitude.
水下特征差异极大。