🗣️ 情景例句
You are very lucky, Robbie, to have such a nice family.
Robbie你真幸运 拥有这样温馨的家。
First impressions are most lasting.
最初的印象最为持久。
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。