I am 22 years old and have a great job in an advertising agency, working for a very nice boss.
我22岁,在一家广告公司有一份如意的工作,为一位很不错的老板打工。
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。