Pentahalide
五卤化物
🗣️ 情景例句
I came to spend some time with my favorite nephew.
我来是为了和我心爱的侄儿相聚一些时间。
Do flying saucers really exist?
飞碟真的存在吗？
They are arguing over who should pay the bill.
他们为谁应该付款而争论不休。