optical [i 1ptikql | 9p` ]    (¼øÀ§: 4609 - ´ëÇÐ ¼öÁØ)  
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Mean Of or relating to sight; visual.
ÆÄ»ý¾î optically  [ºÎ]
optics  [¸í]
¿¹¹® 1. an optical instrument (±¤ÇÐ ±â°è)
2. optical glass (±¤ÇÐ À¯¸®)
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