未老先衰 ------- decrepit before one's age

例句：
A: Why don’t you like George?
你为什么不喜欢乔治。
B: Because he lacks animal spirits and his appearance looks decrepit before his age.
他缺乏生气，看起来一副未老先衰的样子。

同义词：
prematurely senile

注释：
animal spirits 生气，活力