这里不是讨论语言学的地方，我们就“存异”吧。
关于Dutch和Deutsch的问题，抄一段wiki，供参考：
The origins of the word Dutch go back to Proto-Germanic, the ancestor of all Germanic languages, *þeudiskaz (meaning "national/popular"); akin to Old Dutch diets, Old High German duitsch, Old English þeodisc and Gothic þiuda all meaning "(of) the common (Germanic) people". As the tribes among the Germanic peoples began to differentiate, its meaning began to change. The Anglo-Saxons of England for example gradually stopped referring to themselves as þeodisc and instead started to use Englisc, after their tribe. On the continent *theudo evolved into two meanings: Diets (meaning "Dutch (people)" <archaic>) and Deutsch (German, meaning "German (people)"). At first the English language used (the contemporary form of) Dutch to refer to any or all of the Germanic speakers on the European mainland (e.g. the Dutch, the Flemings and the Germans). For example, in Gulliver's Travels, German is called "High Dutch", whereas what we call Dutch today is called "Low Dutch". Gradually its meaning shifted to the Germanic people they had most contact with, both because their geographical proximity, but also because of the rivalry in trade and overseas territories: the people from the Dutch Republic, the Dutch. |
