其代价就是必须将两台机器都配置为处理双倍工作负载，尽管在常规操作下，仅仅使用了一半容量。
The cost is that both machines must be configured to handle double the workload, although under normal operation this capacity is used only by half.
然而，对于设计者来说，创建两组图形很费时间，并且意味着在需要更改图形时，必须对这两组图形做双倍的维护工作。
Creating two sets of graphics, however, is time consuming for designers and means that dual maintenance must be done on both sets if the graphic needs to change.
成功的男人背后总有一个优秀的女人。不是妻子就是母亲，如果两个都是，那他确实享受着双倍福分。
No man succeeds without a good woman behind him. Wife or mother, if it is both, he is twice blessed indeed.
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