[simiones]

English also shows a remarkable variation in pronunciation of words even for a single person. I don't know of any other language where, even in careful formal speech, words can just change pronunciation drastically based on emphasis. For example, the indefinite article "a" can be pronounced as either [ə] (schwa, for the weak form) or "ay" (strong form). "the" can be "thə" or "thee". Similar things happen with "an", "can", "and", "than", "that" and many, many other such words.