Icmp
[计] Internet报文控制协议
🗣️ 情景例句
When you're ready to get off, remember to press the button near your seat.
当你要下车时，记得按你座位旁的按钮。
By doing nothing we learn to do ill.
懒散学为非。
I tried to wake up my wife by ringing the doorbell,
我按响了门铃，试图唤醒我的妻子，