From those digital pictures, they zoomed in on the subjects' eyes to examine images of bystanders reflected in the cornea.

从这些数字图像中，他们放大了人脸样本中的眼部区域，检测从眼角膜中反射出旁观者的图像信息。

But if the adapters work as promised, patients could snap digital pictures of their eyes and e-mail them to a doctor.

如果这种新型适配器的效果达到预计水平，眼病患者就可以给自己的眼睛拍张照片，再发给医生。

It would use phone screens or high-tech eyewear to create digital pictures. But, Apple has not yet offered such a product.

它将使用手机屏幕或高科技眼镜来打造数码图片。但是苹果公司尚未推出这样的产品。

Yes. 'Hard copy' is what we call the paper version of a document you write on your computer or of a digital picture you take.

没错。Hard copy是计算机文件或数码照片的打印版。

Unlike a digital picture which can be copied and shared online, the blockchain ensures that only one person can own that cup or any digital item at the time.

不同于数字图像可以复制和分享，区块链确保只有一个人能在同一时刻拥有那个杯子或那些数据。