Citing
n. 引用, 引证；举例
🗣️ 情景例句
That was not the case.
事实并非如此。
I'm so scared.
我怕极了。
It is the natural frequency of emission of the hydrogen atoms in space and was discovered by us in 1951;
这个频率是空间氢原子释放的自然频率，是在1951年被人类发现的。