Lapb
链路接入规程
🗣️ 情景例句
Simply this.
简单说来是这样的。
Is there a public phone near here?
这附近有公用电话吗？
'He had travelled only seven miles across the Channel when his engine failed and he was forced to land on sea.
但他只在海峡上空飞行7英里，引擎就发生了故障，他只好降落在海面上。