基本解释通婚英汉例句双语例句Since Sirius makes a distinction with Molly being a cousin by marriage, we can assume that Arthur is more likely to be related by blood.因为西历厄斯明确地说过，他和莫丽是姻亲表姐弟，那我们可以认为亚瑟和他更可能是血亲。