英语词汇“principal focus”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	principal focus
释义	principal focus Optics. See focal point (def. 1). [1825-35]
随便看	suspicion suspicional suspicious suspiration suspire Susquehanna suss Sussex Sussex spaniel sustain sustained-release sustainer sustaining program sustenance sustentacular sustentation sustention sustineo alas susu susurrant susurration susurrous susurrus Susy Sutherland

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