This level property can be different from Putonghua foundation, which helps learners with different language competency clearly define their concrete aims and fulfill the aims scientifically.
这种层级性必须能为普通话基础不同，语言学习能力不同的学习者指明努力的具体目标并能科学检测这些目标的达到情况。
This level property can be different from Putonghua foundation, which helps learners with different language competency clearly define their concrete aims and fulfill the aims scientifically.
这种层级性必须能为普通话基础不同，语言学习能力不同的学习者指明努力的具体目标并能科学检测这些目标的达到情况。
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