Collusite
硫钒锡铜矿
🗣️ 情景例句
I hope he's good when we're away.
我希望我们不在的时候他很乖。
He that doth most at once doth least.
想一次做完什么事，结果一件也做不完。
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。