Fluoprotactinic acid
[化] 氟镤酸; 氢氟镤酸
🧩 词语组成解析
🗣️ 情景例句
What are your favorite subjects?
喜欢哪些课程？
The man is a piano accompanist.
这个人是钢琴伴奏者。
Please sign a copy of our Sales Contract No.156 enclosed here in duplicate and return to us for our file.
请会签第156号销售合同一式两份中的一份，将它寄回我方存档。