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The term dialect is the label given to the form. of a language used by any group of speakers or used in a particular field. ()

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Mount Mekinley, 6187 meters high, on the north of the Alaska, the highest peak on the

Monophthongs and diphthongs are two major types of vowels. ()

The early settlers in the colony discovered a way to make money by growing tobacco. ()

简述焊接区域中氢的来源及其主要危害?

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