英语词汇primary production怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	primary production
释义	primary production 1. 【生】初级生产(生态食物链中的第一个环节，通常由绿色植物组成，但在某些食物链分析系统中包括细菌) 2. 原材料的生产 primary producer
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