和平是很难维持的，因为那是双方面的。
Peace is hard to maintain, because there are two sides to it.
它说明双方面的争论。
服务设计必须能体现业务和信息双方面的需求。
Service designs must incorporate both business and information requirements.
服务设计必须能体现业务和信息双方面的需求。
Service designs must incorporate both business and information requirements.
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