Lignitize
v. 使变为褐煤
🗣️ 情景例句
All set for lunch, Harry.
午餐的一切都准备好了， Harry。
Life is full of ups and downs.
人生沉浮多。
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。