Bmd
abbr. 弹道导弹防御（ballistic missile defence）
🗣️ 情景例句
What was your GPA last semester?
你上个学期的平均成绩是多少？
The water has risen over the riverbank.
洪水溢过了防堤。
The open sea was deep and mysterious,
无边无际的海洋深邃而又神秘，