The city of Shenyang, long a moribund center of state industry, is bustling with new private business.
请问long是形容词还是副词?修饰句中的什么成分?
long a moribund center of state industry 为名词短语作同位语。为定语从句的简略。
which has long been a moribund center of state industry. long为副词。
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