今年早些时候，一个来自德国的研究队开发了一项为生成的图片添加失效日期的技术。

Earlier this year a team of German researchers developed a technique for creating images with an expiration date.

youdao

在近期干旱之前，教堂高耸的尖顶(此张未标明日期的资料图片所示)是作为水力发电站蓄水池水位高度的标准测量工具。

Before the current drought, the jutting steeple of the church (pictured in an undated file photo) acted as a depth gauge for the hydroelectric plant's reservoir.

youdao

标题是 Georgia 字体，而图片细节、标题和日期则不是。

The heading is Georgia, but the photo details, title, and date are not.

youdao