Multibeacon
多信标, 三重调制信标, 组合信标
🗣️ 情景例句
Hi, what can I do for you?
嗨，你好。我能为你做些什么？
I'm glad to hear about your graduation.
我很高兴听到你毕业的消息。
and at the most critical juncture we took turns in watching that point.
在最紧急的时刻，我们轮流监视那段河流的险情。