Dimethoxanate
[化] 地美索酯; 咳散
🗣️ 情景例句
Rome wasn't build in a day.
伟业非一日建成。
You're not so great yourself.
你自己也没好到哪里去。
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。