Yet the task Mr Pyle in fact took on is still a worthwhile one, and the book he has written to fulfil it is outstanding.
然而派尔先生实际从事的这个任务仍是相当有价值的，他为完成任务而创作的本书也是相当杰出的。
2
A partner link defines operations that may be implemented internally or may even map to operations in external Web services that may be invoked in order to fulfil the task.