mushroom cloud
noun /ˈmʌʃrʊm klaʊd/,  /ˈmʌʃruːm klaʊd/
  /ˈmʌʃrʊm klaʊd/,  /ˈmʌʃruːm klaʊd/
- a large cloud, like a mushroom in shape, that forms in the air after a nuclear explosion(核爆炸形成的)蘑菇云 - the mushroom cloud from a nuclear bomb原子弹爆炸形成的蘑菇云 
 
- the mushroom cloud from a nuclear bomb