relating to an important religious ceremony in the Christian Church, such as baptism or communion

The closed churches are unable to hold sacramental rites such as baptisms, marriages, or funerals. 这些已经关闭的教堂是不能举办圣事的，如浸礼、婚礼或葬礼。

The Catholic Church does not recognize divorces between couples who have been joined together in sacramental holy matrimony. 经婚配圣事结婚的夫妻，如果离婚则不获天主教会认可。

used for referring to the holy bread and wine eaten at Holy Communion (= a religious ceremony)

The words are spoken over the sacramental bread. 这些话是在吃圣饼的时候说的。

After this the sacramental wine was administered. 然后分发了圣餐葡萄酒。