Corol
花冠
🗣️ 情景例句
I understand, Grandpa.
我能体会你， 爷爷。
He admitted his guilt to the police.
他向警方承认犯罪。
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。