Ferrometry
[化] 亚铁量法; 亚铁量滴定法
🗣️ 情景例句
Only a five percent discount? How about twenty percent?
只打九五折？八折怎么样？
Excuse me. Could you give me change for a dollar?
劳驾，你能不能换1元零钱给我？
What are you doing?
你在干什么？