slidac

例句：

1. 1. The stone was so slippery that it made her fall easily.
   这块石头太滑了，她很容易就摔倒了。
2. 2.He used a slate to draw his designs on the wall.
   他用石板在墙上画设计。
3. 3.Slate is a type of mineral that is often used in construction and as an alternative to marble.
   滑石是一种矿物，常用于建筑和作为大理石的替代品。