但是，当一个Web服务需要维护持久性数据(比如，成为一个有状态的Web服务)时，事情就变得有点复杂了。

But, when a Web service wants to maintain persistent data (for example, become a stateful Web service) things become a little more complex.

youdao

但是，当一个Web服务需要维护持久性数据(比如，成为一个有状态的Web服务)时，事情就变得有点复杂了。

But, when a Web service wants to maintain persistent data (for example, become a stateful Web service) things become a little more complex.

youdao