Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
What are you trying to say, Harry?
你到底想说什么， Harry？
What is known to three is known to everybody.
一件事情三个人知道就人人知道。
You mustn't move someone if they are badly hurt.
让她留在原地。如果有人受了重伤，你不能动他。