不要忘记，我们现有的EAR文件是一个用包装器包装原始的遗留服务实现的文件。
Don't forget, our existing EAR file is the one with the wrapper around the original legacy service implementation.
提要聚合器是一个包装器组件，用来包装提要阅读器组件以实现本文的主要目标：创建一个可定制的rss提要聚合函数。
Feed aggregator is a wrapper component that wraps the feed reader component to meet the main objective of this article: to create a customizable RSS feed aggregation function.
Message类是个包装器，包装被处理消息的有效负载。
The message class is a wrapper around the payload of the message being processed.
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