Abg
abbr. 气骨导间距（air bone gap）
🗣️ 情景例句
But I have a doctor's appointment in the afternoon.
但我后天下午跟医生约好了。
To be of use in the world is the only way to be happy.
为善最乐。
A wet road is usually slippery.
潮湿的路往往是滑的。