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Từ điển Oxford Learners Wordfinder Dictionary
optical instrument
an instrument designed to aid vision • Hypernyms: instrument • Hyponyms: binoculars, field glasses, opera glasses, esophagoscope, oesophagoscope, jeweler's glass, periscope, projector, sights, spectacles, specs, eyeglasses, glasses, spectroscope, prism spectroscope • Part Meronyms: lens, lense, lens system
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