Bmd
abbr. 弹道导弹防御（ballistic missile defence）
🗣️ 情景例句
All right. Is...is Susan coming?
好吧， Susan来吗？
Please ring off.
请挂电话。
What a shame! Never mind, I'll write to him.
真遗憾！不要紧，我会给他写信的。