Recovered acid
[化] 回收酸; 再生酸
🧩 词语组成解析
v. 重新获得；恢复（recover的过去分词）
🗣️ 情景例句
That's a little more than we had planned.
这比我们计划的多了一些。
When did you take the examination?
你什么时候去参加考试？
She has been to school.
她上学去了。