There are often situations in which the output of a task is a complex datatype 在很多情况下任务的输出是一个复杂的datatype 。
The map is used to map parts of a complex datatype to the input of a subsequent task 该映射常用于将复杂datatype的部件映射到后续任务的输入。
This task may be connected to other tasks that accept as inputs the data that may be contained inside the complex datatype that is the output of a previous task 此任务可以连接到将数据作为输入信息来接收的其它任务中去,而这些数据可以包含在复杂datatype的内部,其中datatype正是前一个任务的输出。