verb · to move backwards or retreat from a physical position

请大家退后，给救护车让出通道。

verb · to move or shift back in time

他把影片的进度退后了几分钟，想仔细再看一遍细节。

verb · to make concessions or retreat from a stance during a conflict or negotiation

在涉及领土主权的问题上，我们绝不能退后半步。