To be sure: how to be a highly efficient class of persons.
确切地说：怎样才能成为一名高效率的听课者。
Class discussion is a highly efficient supplementary method.
课堂讨论是一种高效的辅助教学方式。
The company has advanced production processing equipment first-class, efficient production management experience.
公司拥有先进的生产加工设备，一流、高效的生产管理经验。
The company has advanced production processing equipment first-class, efficient production management experience.
公司拥有先进的生产加工设备，一流、高效的生产管理经验。
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