Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
I'll wait for my father.
我要等我爸爸。
I'm going to have some x-rays taken.
我要拍摄Ｘ光照片。
First, I tell the actors where to stand and where to move.
首先，我要告诉演员在剧中站立和移动的位置。