Heptalenium
并庚间三烯离子
🗣️ 情景例句
I have a daughter.
我有一个女儿。
I don't mind staying up late.
我不在乎熬夜。
The comparable speed from the Moon is only 1.5 miles per second.
而从月球出发的相应速度只是每秒1。5英里。