例文・使い方で印象づける「observational」の覚え方


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...Refracting astronomical telescopes are now constructed on thisprinciple, it having been discovered that for observational purposesthey possess several advantages over the Galilean instrument...   Refracting astronomical telescopes are now constructed on thisprinciple, it having been discovered that for observational purposesthey possess several advantages over the Galilean instrumentの読み方
Thomas Orchard 「The Astronomy of Milton's 'Paradise Lost'」

「observational」の意味・発音

いろいろなフォントで見る「observational」


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