它还应提供有意义的、有指导性的缺省值。
阅读障碍儿童的异质性和阅读过程的复杂性使得很难形成统一、有效和有指导性的评估模式。
Because of the heterogeneity of children with reading disabilities and the complexity of reading process, a uniform, effective and directive assessment model can hardly be formed.
本研究通过比较分析教育传播过程中的几个主要因素,为高校多媒体教学提供某些有指导性的建议。
This study provided multimedia teaching with some guidance suggestions by the research of the main factors in educational communication in universities.
One that I found most instructive is called The Cambridge World History of Food, which is this very--two very large volumes.
我觉得最具指导性的是,《剑桥世界饮食史》,它有两大卷
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