但在过去几年内，事情发生了变化：这项技术已经变得非常成熟。

But in the past few years, something has shifted: the technology is now surprisingly mature.

youdao

但在过去几年内，事情发生了变化：这项技术已经变得非常成熟。

But in the past few years, something has shifted: the technology is now surprisingly mature.

youdao