如何使用 "inexpiable" 造句

1. Their office is solely to punish murder between blood relations , and of such murders the most grave and the most inexpiable , according to mother-right , is .
她们的职务只是追究血缘亲属中间的谋杀案件,在这里,按照母权制,杀母是最不可赎的大罪。