将现有的客户基础迁移到新的技术模型，同时又不冻结当前产品的现行的销售，是一个挑战。
Moving an existing customer base to a new technology model is a challenge without freezing existing sales of current product offerings.
将现有的客户基础迁移到新的技术模型，同时又不冻结当前产品的现行的销售，是一个挑战。
Moving an existing customer base to a new technology model is a challenge without freezing existing sales of current product offerings.
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