The body of the relation usually contains the correspondences that need to be applied to the properties of the matched values, in order to propagate the execution of the transformation.
关联的主体通常包含需要用于匹配的值属性的通讯，这样可以传递转换的执行。
2
The body is not needed before the specific item was selected from the portlet, so retrieving it any earlier would be a waste of execution time and memory resources.
在从Porlet中选择特定的项之前，不需要正文，因此提前检索正文将浪费执行时间和内存资源。
3
"If New Jersey holds another execution, I'll eat the body," vows Michael Radelet of the University of Colorado.