Backfiller
[机] 回填机
🗣️ 情景例句
She would have loved it.
她会喜欢这里的。
Where love fails we espy all faults.
恋爱一旦遭失败，缺点全都看出来。
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。