Gdf
n. 氣體動力設備（Gas Dynamic Facility）
??? 情景例句
Keep cool.
保持冷靜。
Are you ready for your dessert now?
你現在準備好甜菜了嗎？
The skins were used for making tents and water containers.
還可以用野牛皮制作帳蓬和裝水的容器。