1·The build phases (and any preceding build phases for each build phase lifecycle) and goals are invoked in the order specified.
构建阶段(以及每个构建阶段生命周期的任何构建阶段之前阶段)和目标都按指定的顺序被调用。
2·The constructor invoked may be either another auxiliary constructor or the primary constructor, and it must be the first statement in the auxiliary constructor's body.
被调用的构造函数可以是另外一个辅助构造函数或者主构造函数，而且它必须出现在辅助构造函数主体的第一句。
3·When invoked, the service notifies an individual of a task to do and passes the input data in an appropriate form.
该服务被调用时，将通知承担任务的个人进行相关工作，并将输入数据以恰当的形式传递给此人。
4·Our callback methods were invoked as expected, and we can see that all the files in the tree have been listed and all the directories have been visited.
回调方法如期望那样被调用，我们可以看到，树中的所有文件都已列出，并且所有目录均已被访问。
5·The original thread used by the mediation flow continues, but any response returned from the invoked service isn't available to this thread.
中介流使用的初始线程继续执行，但是此线程不能使用从被调用的服务返回的任何响应。