Precoated
(precoat 的过去时) (在过滤器表面涂敷的)滤料层
🗣️ 情景例句
I'm leaving for Beijing on a four-day tour.
我马上要去北京旅游4天。
One flower makes no garland.
一木不能成林。
Please fetch a chair from another room.
请到别的房间取一把椅子。