Sad to say, this project has turned out to be mostly low-level findings about factual errors and spelling and grammar mistakes, combined with lots of head-scratching puzzlement about what in the world those readers really want.
【词汇突破】head-scratching：令人头疼的
puzzlement困惑
【主干识别】This project has turned out to be findings 加上后面一系列的对于findings的修饰。
【其他成分】sad to say 插入语，遗憾的说。combined with lots of head-scratching puzzlement 非谓语结构做定语(这里修饰的是findings);about what in the world those readers really want.定语从句修饰puzzlement;in the world 做插入语。从句的主干为：what those readers really want.
【微观解析】factual errors and spelling and grammar mistakes。这个并列结构是factual errors和spelling and grammar mistakes的并列。combined with 相当一个连词。
【难点揭秘】非谓语结构的加入会导致解析起来比较困难。
【译文赏析】遗憾的说，这个项目最终被证明是一个很低级的研究，它着眼于错误的事实和拼写以及语法的问题，还有很多关于读者究竟想要什么的困惑。