1. A family name becomes defunct when the only heir dies without any son.
    当唯一的继承人死去了之后没儿子，那这个姓就要绝迹了。

2. "The kids grow up, the dog dies and you change your priorities."
    "孩子会长大，狗会死去，你所优先考虑做的事也会改变。"

3. And what makes my mother sad right now, I think, is not simply that her mother will die in a day or two, but that, once her mother dies, there will never again be someone to love her in quite such a complete, unrestrained way.
    我想，现在最让妈妈难过的，不仅是她母亲很快就会离世，而且还有一旦她母亲去世，就再也没有一个人能这样全心全意、毫无保留地爱她了。