网友已经开始认识到他们在网上所做的任何一件事都会留下数字痕迹。
Internet users have only recently begun to realise that every single thing they do online leaves a digital trace.
长久以来，无论是我们去狩猎还是从动物的血盆大口下逃脱，它们总是会在我们的脑内留下一丝痕迹，甚至仅仅是看着一张动物的照片都会让我们脑内的开关调到随时戒备的状态。
Years of either running from or running after animals left its mark in the human brain -- even just looking at a photo of an animal jolts our brains into action.
恋爱就像口香糖，时间长了会平淡无味，觉得平淡了就想放弃，而无论丢在什么地方，都会留下难以抹去的痕迹。
Love is like chewing gum, a long time will be bland, bland that wanted to give up, regardless of where lost, would leave a difficult to erase the traces.
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