Ferramic
粉末状的铁磁体
🗣️ 情景例句
I always wanted to travel to Europe but I was afraid that language would be a problem.
我总想去欧洲旅游，但我又怕语言是个问题。
I like collecting stamps.
我喜欢收集邮票。
Do you know what they are?
你知道他们是干什么的吗？