In the example use case, this means that the ArticleHome component should not know about the CartHome component and its Cart objects and vice versa.
在实例用例中，也就是说ArticleHome组件不应该知道CartHome组件及它的Cart对象，反之亦然。
Also, the client should not receive more data than it needs. For example, the client should not know where other players are, except if they are nearby.
而且，客户端不应收到它不需要的数据。
You should not know the joys and sorrows without experienced yourself.
若非亲身经历，岂知其中甘苦。
In fact it was quite as well that she should not know.
事实上，她确实还是不知道为妙。
I left him a note with my address on for fear that he should not know where to see me.
我留了一张纸条告诉他我的地址，以免他不知道去哪里找我。
I left him a note with my address on for fear that he should not know where to see me.
我留了一张纸条告诉他我的地址，以免他不知道去哪里找我。
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