Ultrawideband
超宽带
🗣️ 情景例句
Oh, good.
噢， 好了。
Doesn't matter what you say.
说了也没用。
That's OK. But you mustn't smoke while you're walking around in the bush either. You could start a bush fire.
没关系。但是在丛林里走动时你也千万不要抽烟，会引起火灾的。