Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
Lots of special country things.
有许多特别的乡村趣事。
Be my guest.
别客气。
It was over 30 feet in length and had a 2,500-horsepower engine.
它的车身长30英尺，有一个2，500 马力的发动机。