Mona
n. [动]白腹长尾猴；莫娜（女子名）
🗣️ 情景例句
If it's a good one, then we'll make it work for us.
假如它是个好工作， 我们就顺水推舟。
Which train do I take to Philadelphia?
去费城乘哪趟车？
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。