Subcarrier
[电] 副载波
🗣️ 情景例句
Usually a house is too expensive for the salary-earning class to buy.
通常房屋太贵，工薪阶层买不起。
Let me see your passport, please.
请让我看看你的护照。
It looks like the shipping company did this.
应该是货运公司造成的吧。