Sprightfully
adv. sprightful的变形
🗣️ 情景例句
Would you like something to eat?
来吃点东西， 好吗？
Thank you.
谢谢。
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。