a slag brick的用法和样例：
- As I was waiting for a bus a brick fell on my head.
- Keep on go till you come to a red brick building.
- During the early stages of the blow, lime (CaO) is added and this combines with oxidized impurities to form a slag.
- Five-year-old Zhou Hao was playing with a classmate near a slag heap from another factory in their hamlet.
a slag brick的相关资料：