保护伞

例句：

1. 1. She used to work as a nurse, providing care for the sick and injured.
   她曾经是一名护士，为生病和受伤的人提供护理。
2. 2. The police officer was awarded the medal for bravery in saving lives during a natural disaster.
   这位警官因在自然灾害中英勇救人而被授予勋章。
3. 3. He is like a protective umbrella, always there to offer support and comfort to those around him.
   他就像一把保护伞，总是在那里为周围的人提供支持和安慰。