Our World

Create fun in the sun

作者：21ST

Sunglasses: As early as 1284, the first eye glasses were invented in Italy. In 1752, designer James Ayscough introduced green and blue glasses to protect eyes from strong light. These firs...

点击阅读全文

对本期电子报订户、有效期内的VIP教师会员和本学期初中尊享卡用户，我们开放所有内容：
如果您拥有以上权限，请点这里登录；
订阅电子报，请点这里；
激活VIP教师卡，请点这里；
激活21英语尊享卡，请点这里。