Keepalive message
[计] 存活报文
🧩 词语组成解析
🗣️ 情景例句
Why is he blowing his horn like that?
为什么他这样子按喇叭？
I told him to stay till he comes back.
我告诉他留下来等他回来。
Yes, you're right! Thanks.
对，在这儿，谢谢！