Phoronida
帚虫类
🗣️ 情景例句
What made you decide to change job?
是什么使你决定更换工作？
A guilty conscience is a self-accuser.
做贼心虚，良心自诛。
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。