摘要:
The high-resolution photograph was taken with a 135-mm lens mounted on a digital SLR camera.这张高清照片是用一部安装了135毫米镜头的单反相机拍摄的。 Fingerprint scanners have fo 阅读全文
摘要:
22 76 Predicting the future is notoriously difficult. Who could have imagined, in the mid 1970s, for example, that by the end of the 20th century, com 阅读全文