Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
Alexandra.
Alexandra。
Yes. At 3 pm.
是的，约的是下午3点。
he had great difficulty in controlling the car because a tyre burst during the first run.
但他很难把汽车控制住，因为在开始的行程中爆了一只轮胎。