Machine translation from polysynthetic to fusional languages is a challenging task, which gets further complicated by the limited amount of parallel text available. Thus, translation performance is far from the state of the art for high-resource and more intensively studied language pairs. To shed light on the phenomena which hamper automatic translation to and from polysynthetic languages, we study translations from three low-resource, polysynthetic languages (Nahuatl, Wixarika and Yorem Nokki) into Spanish and vice versa. Doing so, we find that in a morpheme-to-morpheme alignment an important amount of information contained in polysynthetic morphemes has no Spanish counterpart, and its translation is often omitted. We further conduct a qualitative analysis and, thus, identify morpheme types that are commonly hard to align or ignored in the translation process.

探究多合成语到屈折语的机器翻译难点，通过从三种低资源多合成语(Nahuatl、Wixarika 和 Yorem Nokki) 到西班牙语和西班牙语到这几种语言之间的翻译实验，分析了多合成语词素在汉语中没有对应转化的难点，归纳了容易无法被匹配的词缀类型。

失落的翻译：多合成语和融合语言机器翻译中的信息丢失分析