Aopa
abbr. Aircraft Owners and Pilots Association 航行器所有者和飞行员协会; American Orthotic and Prosthetic Association 美国矫正修复协会; anomalous origin of unilateral pulmonary artery 单侧肺动脉异常起端
🗣️ 情景例句
You really must have your wits about your when dealing with such people.
跟这类人打交道，你必须格外警觉。
Who is speaking?
请问是谁打来的？
Those flowers are lovely, too.
这些花也很漂亮啊。