When those users' devices check in with the social network, they download the data and decrypt it to reveal the photo.

当那些用户的设备登录这个社交网站时就可以下载解密并看到这张图片。

youdao

The photo stories reveal how the babies are progressing - what they are eating, what immunizations they have received and how their families are adjusting to a new person in their midst.

这些照片故事展示这些婴儿发育得如何-他们吃些什么，接受过哪些免疫接种，以及他们的家庭如何适应他们中间的一名新成员。

youdao

Another flaw is that the photo of a specimen does not reveal the detail that an actual slide can provide.

另外一个缺陷是标本照片不能反应一张切片所能提供的全部细节。

youdao

The photos by Mario Testino, who recently photographed Prince William and Kate Middleton for their engagement photo, reveal a freshly divorced Diana with a new look and a new energy.

FORBES: A Princess's Legacy of Leadership: Diana And Kate