umbrella
n. /əmˈbrelə/ A1
雨伞；伞
A folding frame covered in cloth, held above your head against rain.
仙境例句
The Duck held her wing over her head like an umbrella, but she was already wet.
鸭子把翅膀举在头上当雨伞，可她早就湿透了。
巴菲特芒格原话
We do not like having a huge umbrella over an industry.我们可不喜欢在某个行业上方撑起一把巨大的保护伞。（意思是：为竞争对手提供庇护和暴利空间。）
Warren Buffett · 2000