Arsinic pentachloride
[機] 五氯化砷
?? 詞語組成解析
次胂酸
五氯化物
??? 情景例句
He's running for the school board.
他正在競選聯合校董會董事。
When did you know the answer?
你什么時候知道答案？
'Oh dear,' said the conductor suddenly.
“哎呀，”售票員突然說，