Hackettstown
[地名] [美国] 哈基茨敦
🗣️ 情景例句
We're in luck.
我们运气好。
I don't know how to work the machine.
我不懂得怎样使这部机器运转。
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。