Helos
abbr. highly eccentric lunar occultation satellite 高偏心月掩卫星
🗣️ 情景例句
Oh, and there is Max!
噢， Max在那！
Goodness, I do hope this isn't a loud gun. I hate noise.
但愿这不是一把会发出巨响的手枪。俺不喜欢噪音。
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。