Operational software
[计] 操作软件, 系统软件
🧩 词语组成解析
🗣️ 情景例句
Are we ready to go?
我们可以开始了吗？
Opportunity seldom knocks twice.
机不可失，失不再来。
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。