mullite

例句：

1. 1. The engineer used mullite to make the ceramic tiles.
   这位工程师用莫来石制作了瓷砖。
2. 2.The mullite bricks are highly resistant to fire.
   这种莫来石砖非常耐火。
3. 3. The mullite fiber is commonly used in the production of high-performance aerospace materials.
   莫来石纤维常用于高性能航空航天材料的生产。