Procedures and macro functions can be nested up to 40 levels.
宏过程和宏函数可以有40层嵌套。
The past research on the subject focuses on the macro-functions of preposing in discourse and few studies have touched upon its micro-functions.
以往 研究局限于前置句型在语篇中的宏观功能，其微观功能很少探讨。
The past research on the subject focuses on the macro-functions of preposing in discourse and few studies have touched upon its micro-functions.
以往 研究局限于前置句型在语篇中的宏观功能，其微观功能很少探讨。
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