Ferroferrite
纯铁, 纯铁体
🗣️ 情景例句
Don't mention it. What would you like to drink?
别客气，想喝点什么？
Like cow, like calf.
有其父必有其子。
At night, when you really wish to go to sleep, you rarely manage to do so.
到了夜晚，你真想睡了，却很难入睡。