Duplexercoupler
复式耦合器
🗣️ 情景例句
When you go to a new school it takes a while to know the ropes.
到一所学校读书要花一段时间熟悉情况。
She won't be in until 10:45, so the earliest would be 11:00.
她要到10:45才来，所以最早也得到11点才能看。
Most countries use these satellites to send and receive messages.
大多数国家利用这些卫星发送和接收消息。