一旦开始安装，先前的ROM将无法恢复。在安装过程中以及安装完毕后如果发生问题，可能需要将此设备送至O2客服中心进行维修。
Once being installed, previous ROM cannot be restored. Should problems happen during or after the installation, the device may require servicing in O2 service centres.
一旦事务过程完成，应用程序就可以开始与安装在目标应用程序服务器中的任何应用程序进行通信。
Once the registration process completes, the application can begin communicating with any application installed in the target application server..
您一旦安装了操作环境，就是时候开始编写代码了。
Once you have your operating environment set up, it is time to get started writing the code.
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