Monocon
聚焦阴极射线管
🗣️ 情景例句
If you don't know a person's last name, use 'ma'am' or 'sir'.
如果你不知道一人的姓， 你应称呼他为 'ma'am' 或 'sir' 。
He who fears to suffer, suffers from fear.
怕吃苦头的反因怕而吃苦头。
I'll wait until I hear from you.
那么我就等你消息，