the legal or official branch of a family tree direct line of descent
direct line of descent
嫡系用英文怎么说
嫡系部队用英文怎么说
嫡长子继承制用英文怎么说
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英语词典收录了最新的汉英词典和英汉词典，总共有200多万个词条，词库仍在不断更新中。
