在至今二十多年里，对于免执照应用，这是第一个重要的波谱频段。

This is the first significant block of spectrum made available for unlicensed use in more than 20 years.

youdao

在至今二十多年里，对于免执照应用，这是第一个重要的波谱频段。

This is the first significant block of spectrum made available for unlicensed use in more than 20 years.

youdao