分析发现，移动通信市场客户需求增长的高速性和移动通信业务本身的低边际成本是刺激移动运营商频繁推出业务套餐的主要动因。
The analysis indicates the high growth of the demand in the market and the low marginal cost of the business are the main factors for the operators to recommend suite business frequently.
企业作为一个营利性的社会经济组织，来自于市场的经济刺激无疑是其承担社会责任的内在动因。
The interior drive for corporates as profit-oriented social organizations to take social responsibilities is the economic stimulus from market;
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