A fault message should be generated whenever a failure occurs at an intermediary.
每当中介体发生故障时,都应该生成错误消息。
2
If a join condition is not satisfied, then a join failurefault is thrown.
如果不能满足联接条件,则会抛出联接失败错误。
3
The second diagnosis has the advantage of explaining why the first course of treatment has failed. It has the disadvantage of making that failure the doctors' fault.