Retrorocket
n. 制动[减速]火箭系统
🗣️ 情景例句
This will be a perfect jacket for the wintertime
这一件夹克就很受用
This will be the biggest fish ever.
这是前所未见的大鱼吧？
After entering the narrow gap on the plateau, they climbed down the steep sides of the cave until they came to narrow corridor.
他们从高原上的窄缝进去，顺着笔直陡峭的洞壁往下爬。来到一条狭窄的走廊上。