Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
That's right.
是的。
Spot, the dog, always whimpers when he is left alone.
那条叫斯伯特的狗，被单独留下来，时常寂寞得呜咽。
You might try one of our cheaper components.
你试试这种较便宜的组件怎样？