Gdf
n. 气体动力设备（Gas Dynamic Facility）
🗣️ 情景例句
I'm just happy that we're able to talk about it.
我很高兴我们能够一起商讨这件事。
I'm very sorry. Can I get you another one?
非常抱歉。能不能另外给你买一条呢？
Mrs.Bussman commented on the workman's close resemblance to her husband and even suggested that he might be his brother.
巴斯曼夫人说那工人与她丈夫相貌很像，甚至猜测他可能就是她丈夫的兄弟。