R-m value
[化] R-M值
🧩 词语组成解析
🗣️ 情景例句
how would you do it?
你怎么说？
It's up to us to help those in need.
我们有责任帮助那些有困难的人。
Yes, speaking. Just a moment. Let me turn the music down. There, that's better.
是的，我就是。请稍等。让我把音量关小一点。你瞧，好多啦。