Atlatl
n. (美洲印第安人和爱斯基摩人用的)梭标投射器
🗣️ 情景例句
I know what you mean.
我懂得你的意思。
I don't believe it.
我才不信咧！
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。