Ferrofluid
铁磁流体
🗣️ 情景例句
Many shopping malls and supermarkets can deliver goods straight to your door.
许多购物中心和超市提供免费送货上门服务。
We'd like to hear what you say concerning the matter of packing.
我们很想听听你们在包装方面有什么意见。
Mrs.Ramsay received an anonymous letter.
拉姆齐太太收到一封匿名信。