The durability of subgrade soils induced by climatic changes in seasonally frozen areas are as namely, freeze–thaw and wet–dry cycles, have been recognized as a major factor in the poor engineering performance of such soils.
请问这句话中are as namely 是做什么成分?怎么后面直接加have been了,也没见连接词啊
网友应该首先确认这个句子的正确性。例如
The durability of subgrade soils induced by climatic changes in seasonally frozen areas are ...
作主语的名词词组的中心词为durability,谓语动词用are, 这显然是错误的。对错误的句子分析是没有意义的。请你给出原文链接,或准确给出前一句及后一句,标点符号要准确。
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