mac·ro·scop·i·cal·ly /-ɪk(ə)lɪ/ 副詞
Mac·ro·scop·ic Mac·ro·scop·ic·al a. Visible to the unassisted eye; -- as opposed to microscopic. -- Mac*ro*scop*ic*al*ly, adv.
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macroscopically
adv : without using a microscope; "The tubes were examined
macroscopically"