Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
If only we could bottle the fresh air.
要是我们能用瓶子将新鲜空气装回去多好。
Do you swear to tell the truth, the whole truth, and nothing but the truth?
你发誓据实陈述而决无谎言吗？
What you said was quite true.
你所说的完全符合事实。