cry one's eyes out这个短语的意思难道是“把眼睛哭出来”其实，短语真实含义是“表示某人心碎，伤心欲绝，悲痛欲绝，痛哭欲绝”。

【例句】
The two heart-broken sisters cried their eyes out when they heard that their father had died in an accident. 
当得知她们的父亲死于了一场车祸，这两个心碎的姐妹伤心欲绝。

What happened? Why is she crying her eyes out?
怎么了？她为什么这样痛哭流涕的？