Frounced
n. 虚饰；褶\\nvt. 卷…的头发；使起皱纹\\nvi. 皱眉；起皱
🗣️ 情景例句
we would like to have our investments returned as early and safely as possible.
我们总想尽早而又安全地收回我们的投资。
In all things, it is better to hope than to despair.
凡事抱希望为佳，不应悲观而失望。
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。