Pervanadic acid
[化] 过钒酸
🧩 词语组成解析
🗣️ 情景例句
Yes, this is my youngest son Robbie.
是的 这是我的小儿子Robbie。
But wouldn't you like to spend an extra day or two here?
你们不愿意在北京多待一天吗？
She likes the children to read newspapers and books in the reading room.
她喜欢孩子们来阅览室读书看报。