1、She believed that marrying him would be a mesalliance and tarnish her family's reputation.
她相信嫁给他会是一次婚姻不相称，并且会玷污她家的名声。
2、Their union was seen as a mesalliance by their social circles, as they came from completely different backgrounds.
由于他们来自完全不同的背景，他们的结合被他们所在的社交圈视为异类结合。