「玻璃心」,glass heart? 居然會是這個詞,你絕對想不到!!

Glass hearted means someone mentally weak, as fragile as glass. It is something that not suppose to make you feel sad or angry or any sort of mood change but it changed your mood negatively due to immaturity or lack of social experience. 

「玻璃心」指的是精神像玻璃一樣脆弱的人。它不會讓你情緒正常地變化，比如悲傷、憤怒或其他情緒，但它會讓你由於不成熟或缺乏社會經驗消極地改變你的情緒。

It’s not exactly equal to sensitive, because sensitive person can still act strong like warriors. The opposite could be metal-stone heart which means someone don’t care about any situation, cold, a bit cruel, doesn’t get affected by others.

這並不完全等同於敏感，因為敏感的人仍然可以表現得像戰士一樣堅強。相反可能會是鐵石心腸，這意味著某人不關心任何情況，他是冷酷甚至有點殘忍的，並不會受到其他人的影響。