Floodwall
n. 防洪石堤,防洪岸壁
🗣️ 情景例句
You're quite the artist!
你还真像个艺术家。
Do as most men do and men will speak well of thee.
为众之所为，受众之所夸。
This depends on the precise radio frequency of the 21-cm wavelength, or 1420 megacycles per second.
这种通讯联系要靠21厘米波段，即每秒1420兆周的精确无线电频率。