Bka
abbr. 膝下截肢（below the knee amputation）
🗣️ 情景例句
Our pleasure.
非常荣幸。
I can't be sure of my future plans.
我还没有明白地定下我将来的计划。
I was doing eighty when I overtook you.
我是以第小时80英里的速度赶上你的。