🧩 词语组成解析
糖, 蔗糖, [Saccharum ]甘蔗属
🗣️ 情景例句
I'm glad I got to know you--and your family.
我也很高兴能够认识你和你的一家人。
Rome was not built in a day.
罗马并非一日可建成；坚持必成。
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。