Perchlorate
[化] 高氯酸盐\\n[医] 高氯酸盐
🗣️ 情景例句
do I really have to
我是不是真的有必要
He's a policeman.
他是警察。
I'll get another one now, said her mother.Don't worry.
“我这就再去拿一支，”她妈妈说，“别担心。”