collateral relative meaning in English

旁系亲属
旁系亲缘

In the substantial requirements of marriage , there are some common points such as the approval of the two parties concerned and monogamy principal . however , there are differences in the legal age of marriage , the range of the collateral relatives by blood who are prohibited to marry and the diseases that forbid marriage
在结婚的实质要件方面，两地有一些共同要件，如男女双方合意、符合一夫一妻制原则，但在结婚的法定年龄、禁止结婚的旁血亲属范围和禁止结婚的疾病等方面存有差异。