英语词汇“sumner line”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	sumner line
释义	sum·ner line \ˈsəmnə(r)-\ noun Usage: usually capitalized S Etymology: after Thomas H. Sumner, 19th century American sea captain : a line of position determined by Sumner's method
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