One of the greatest heartbreaks for fire fighters occurs when they fail to rescue a child from a burning building because the child, frightened by smoke and noise, hides under a bed or in a closet and is later found dead.
出自-2010年12月听力原文
柯林斯高阶英汉双解学习词典释义
N-VAR
（尤指感情破裂引起的）心碎，极度伤心
Heartbreak is very great sadness and emotional suffering, especially after the end of a love affair or close relationship.