Perse
a. 紫黑色的；深灰色的；深蓝色的
🗣️ 情景例句
It was wet yesterday.
昨天下雨。
Gee, don't be mad, dear, red looks good on you.
喏，亲爱的，别生气呀。红颜色对于你再合适不过了。
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。