mitre sill

例句：

1. 1.The mitre sill is a symbol of the church's authority.
   马特西尔是教堂权威的象征。
2. 2.The mitre sill was made from gold and adorned with precious stones.
   马特西尔是用金制成的，上面镶嵌着珍贵的宝石。
3. 3. The mitre sill was used to hold the bishop's robe in place during the ceremony.
   在仪式上，马特西尔用来固定主教的长袍。