1. But they suddenly became the parents of quintuplets, four girls and a boy, an even which radically changed their lives.
    但是他们突然变成了五胞胎的父母：四个女孩一个男孩。

2. But they suddenly became the parents of quintuplets, four girls and a boy, an event which radically changed their lives.
    但是他们出人意料生了个五胞胎，4女1男。这事使他们的生活发生了根本的变化。