Ferrofluid
铁磁流体
🗣️ 情景例句
The area of industry you wanted to get into is already at saturation point.
你想进入的待业已经达到饱和点了。
Did you get dressed right away?
你马上穿好衣服吗？
Many offices use answering machines to give information.
许多办公室使用留言机来提供信息。