mushroomed rapidly 迅速扩张
mushroomed into 迅速演变为
suddenly mushroomed 突然激增
A: Have you noticed how the local cafes have mushroomed lately?
A：你注意到最近当地的咖啡馆是怎么迅速增多的吗？
B: Yes, they've mushroomed almost overnight!
B：是的，它们几乎是一夜之间大量涌现的！
1) 迅速生长或扩张
2) 突然出现大量
3) 像蘑菇一样迅速膨胀
1. 迅速增长；大量涌现
verb
1. To grow or spread very rapidly.
Synonym: expand, proliferate, burgeon