The newly described languages were often sostrikingly different from the well studied languagesof Europe and Southeast Asia that some scholarseven accused Boas and Sapir of fabricating theirdata.

　　译文：

　　这些新近被描述的语言与已经得到充分研究的欧洲的语言和东南亚的语言往往差别显著，这使得有些学者甚至指责博厄斯和萨丕尔捏造数据。

　　点睛：

　　本句的主干是...languages were...different...，句中包含so...that...结构。过去分词短语newly described和well studied分别作languages和languagesof...的定语。accuse sb. of doing sth.意为“指责某人做某事”。