Improvement and refinement are the tools of our trade.
改善与沉淀是我们经营的工具。
For years, we are committed to continuous product improvement and refinement to provide users with high-quality products and services.
多年来我们都致力于产品的不断改进和完善，为用户提供优质的产品和服务。
The basic nature of human beings does not and cannot change. It is only the surface that is capable of alteration, improvement and refinement;
2人类的本性不会也不能改变，只有一些表面特征才会变化、改善和进一步提升；
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