Although it has been possible to infer from the goods and services actually produced what manufactures and servicing trades thought their customers wanted, only a study of relevant personal documents written by actual consumers will provide a precise picture of who wanted what.
这句话中Although引导的句子的翻译是：尽管我们能从实际生产的产品和服务中推断出制造商和服务业对于顾客需求的想法。
1、简单说it is possible to infer from XXX后面为啥还有actually produced？ infer和produce不都是动词吗？
2、有的解释说把to infer做主语，那谁做谓语呢？ 如果produce做谓语，我怎么都感觉翻译不通啊

句子像机器翻译的，连标点都没有，完全只能看意思，不能分析结构，who wanted what，这哪是正常人写的句子