Phthoric acid
[化] 氢氟酸
🧩 词语组成解析
🗣️ 情景例句
I planned to take a few months off.
我计划休息几个月。
Say not all that you know, believe not all that you hear.
莫道全所知，莫信全所闻。
That is John Smith,isn't it?
你是约翰。史密斯，对吗？