mushroom       
 noun uk/ˈmʌʃ.ruːm/ /ˈmʌʃ.rʊm/ us/ˈmʌʃ.ruːm/ /ˈmʌʃ.rʊm/
A2 [ C ]蘑菇;伞菌,蕈 
a  fungus  with a round top and short stem. Some types of mushroom can be eaten
  wild/cultivated mushrooms 野生/人工栽培的蘑菇 
 button (= very small) mushrooms 草菇 
 dried/grilled/stuffed/sliced mushrooms 干/烤/填充调料/切片的蘑菇 
 cream of mushroom soup 奶油蘑菇汤 
 For this recipe choose mushrooms with large caps (= top parts). 做这道菜要选菌盖大的蘑菇。 
 Unfortunately some poisonous mushrooms look like edible mushrooms. 不幸的是,有些毒蘑外表与可食用蘑菇相似。 
 Compare: toadstool
 - More examples
 - I can recommend the chicken in mushroom sauce - it's delicious.
 - "What are you having?" "Er, I'm wavering between the fish soup and the mushroom tart."
 - I had a mushroom omelette.
 
mushroom       
verb [ I ] uk/ˈmʌʃ.ruːm/ /ˈmʌʃ.rʊm/ us/ˈmʌʃ.ruːm/ /ˈmʌʃ.rʊm/
 迅速增长;迅速发展
to increase very quickly
  The number of computers in schools has mushroomed in recent years. 近年来,学校里计算机的数量迅速增长。