Wavebands
n. （无线电的）波段( waveband的复数形式 )
🗣️ 情景例句
Hi.
嗨！
His foot is wounded, Does it hurt?
他的脚受伤了，疼不疼？
Yes. You should never keep fish in a small round bowl.
错不了。你绝不能把鱼养在一个小圆缸里。