Magnetitite
磁铁岩
🗣️ 情景例句
I don't think this is my meal.
我想这不是我点的。
Everybody's business is nobody's business.
人人都管，大家不管。
Portable boiling elements that can boil small quantities of water are useful when the right voltage of electricity is available.
如果有相配的电压，可以煮少量水的便携式热水装置是有用的。