Mameter
马赫表
🗣️ 情景例句
Hello, my name is Robbie Stewart.
喂，我叫Robbie Stewart。
You can receive our program at short wave 37.5 MH.
你可在短波37.5赫兹上收到我们的节目。
What seems to be the problem.
什么样的问题呢？