Alchlor
三氯化铝
🗣️ 情景例句
Unless in uniform, he doesn't look like a policeman.
除非穿上制服，要不他看起来不像警察。
Do you have a try?
你有试过吗？
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。