and hence后面的省略疑问
请问这是个什么句子 and hence后为什么主谓都省略了? and hence中的and和谁是并列关系？
Under modern conditions,this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
最佳答案 2021-01-07 13:26
and是并列连词，hence 是副词（因此，= for this reason），其后承前省略了this requires。
Under modern conditions, this requires varying measures of centralized control and hence the help of specialized scientists such as economists and operational research experts.
=Under modern conditions, this requires varying measures of centralized control and hence this requires the help of specialized scientists such as economists and operational research experts.
句子的基本结构是：=Under modern conditions, this requires ... and hence this requires... 在现代条件下，这需要……因此它也需要……
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