Whenyouwatch3DmoviesorTV，youhavetowearaspecialpairofgla...
问题详情：Whenyouwatch3DmoviesorTV，youhavetowearaspecialpairofglasses．The3Dglassesmaketheimagesfromthescreenlookliketheyarethereintheroomwithyou．Three-dimensional，or3D，meanshavingthreedimensions（维度）:width，hei...