Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
If you are going to insist, then just do it.
如果你想坚持，那么就坚持到底。
The fox smells his own stink first.
狐狸的臭味道，自己先嗅到。
He picked up what seemed to be the smallest bottle and discreetly asked the price.
他挑出一个看上去最小的瓶子，谨慎地问了价。