You'll need to expand this to support an optional user name at the end of the path.
若要支持在路径的末尾允许出现一个可选的用户名，还需要对之进行扩展。
You're given a user name, a URL, an image name, and an optional S3 bucket name.
您将获得一个用户名、一个URL、一个照片名和一个可选的S3bucket 名。
Why couldn't we add a simple mechanism to PubSubHub so that when a client subscribes to push updates, it leaves behind some optional identifying information about the user like their name and avatar?
我们为什么不给PSHB协议添加一种简单机制，当客户端订阅推送更新时会留下一些识别信息，如姓名、头像等？
The optional driver attribute specifies the name of the class implementing the database driver, while the user and password attributes provide login credentials for accessing the database, if needed.
可选的driver属性规定实施数据库driver的类的名称，同时需要时user和password属性提供接入数据库的登录证书。
Stored procedures and user-defined functions are collections of SQL statements and optional control-of-flow statements stored under a name and processed by the database server as a unit.
预存程序和使用者定义函式，是SQL陈述式和选择性流量控制陈述式的集合，由资料库伺服器储存为某个名称，并视为一个单位进行处理。
Stored procedures and user-defined functions are collections of SQL statements and optional control-of-flow statements stored under a name and processed by the database server as a unit.
预存程序和使用者定义函式，是SQL陈述式和选择性流量控制陈述式的集合，由资料库伺服器储存为某个名称，并视为一个单位进行处理。
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