Extremum
n. 极值
🗣️ 情景例句
Richard told us all about you.
Richard跟我们谈起你 。
Praise is not pudding.
恭维不是布丁。
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。