We used reverse image search engines to check the video had not been circulating before February 24th.

我们使用反向图像搜索引擎核查该视频在2月24日之前有没有传播。

We used reverse image search engines to check the video had not been circulating before February 24th. It had not.

我们使用反向图像搜索引擎进行检查，该视频在2月24日之前没有传播过。 视频没有传播过。

Going back years, pedophiles have used Bing to find illegal imagery and have also deployed the site's " reverse image search" feature, which retrieves pictures based on a sample photo.

数年前，恋童癖者就在用必应搜索非法图片了，他们还会利用该网站的“反向图片检索”，即通过样本照片检索图片的功能。