然而各种华语作为第二语言教材缺乏明确统一的水平等级标准作为编写参考。
However, there is a lack of a uniform compilation standard for such teaching materials.
是一部优秀的面向21世纪图书馆学的新教材。参考文献5。
It is an excellent new textbook for the 21st century. 5 refs.
是一部优秀的面向21世纪图书馆学的新教材。参考文献5。
It is an excellent new textbook for the 21st century. 5 refs.
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