The American Optometric Association recommends following the 20-20-20 rule to alleviate eye strain, by taking a 20 second break every 20 minutes to look at something 20 feet away.
美国验光协会建议遵循20-20-20原则来缓解眼睛疲劳，原则就是每隔20分钟休息20秒，看看20英尺以外的东西。
| 单词 | American Optometric Association |
| 释义 |
American Optometric Association
原声例句
Life Noggin 科普精选（双语） The American Optometric Association recommends following the 20-20-20 rule to alleviate eye strain, by taking a 20 second break every 20 minutes to look at something 20 feet away. 美国验光协会建议遵循20-20-20原则来缓解眼睛疲劳，原则就是每隔20分钟休息20秒，看看20英尺以外的东西。
英语百科
American Optometric AssociationThe American Optometric Association (AOA), founded in 1898, represents approximately 37,000 doctors of optometry, optometry students and paraoptometric assistants and technicians in the USA. |
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