This might look like an overly simplistic view, but it should now be clear that within a framework such as EWA, this view is the starting point.
这张图看起来可能过于简化,但是现在可以很清楚地看出,在像EWA这样的框架中,这张图是一个起点。
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It should not be at all surprising that this picture bears some resemblance to a block diagram of EWA; at the highest level, any robust application framework must provide these functions.