Note the present element in these examples: a fire is burning;

注意这些例句里的现在成分：大火在燃烧；

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Note the present element in these exa lot ofs: a fire is melting;

注意这些例句里的现在成分：大火在燃烧；

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Note the present element in these exa lot ofs: a fire is melting;

注意这些例句里的现在成分：大火在燃烧；

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