This list defines the new element, mapping it back to the more general element-for instance, mapping taskbody back to the more genericbody.
该列表定义新元素，将它映射回更一般的元素—例如，将taskbody映射回更一般的body。
2
The interfaces they expose to each other merely specify a message header and a generic message body.
它们相互公开的接口仅仅指定了消息头和一般的消息体。
3
These are reasonably cheap, often generic, pharmaceuticals that, although they do not cure someone, do lower the level of the virus in his body to the extent that he suffers no symptoms.