blossom into sth.中等

What began as a small neighborhood gathering blossomed into a massive cultural event, welcoming tens of thousands of people each year over nearly two decades before abruptly shutting down.

它最初只是一个小型的邻里聚会，后来发展成为一场大型文化盛事，在近二十年里每年接待数以万计的人，然后突然停办。