| Front | op, opt |
|---|---|
| Back | 词根含义：eye, sight; 助记词：optics，opt（眼睛）+ics（科学）=》和眼睛有关的科学=》光学 同根词：hyperopia, myopia, optics, optical, optician, optometry |
Tags: 400root-中文版
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Next card: Opt 词根含义：to choose; 助记词：option，opt（选择）+ion（名词后缀）=》选择 同根词：opt option optative adopt
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