buckle up To anchor or fasten something or someone in place. 系紧或扣紧，一般指安全带 A sign just ahead of me said, Buckle Up. It's the Law. 我面前的一个牌子上写着：扣好安全带。这是法律规定。 Kids, let's all buckle up and hit the road! 孩子们，让我们把安全带都系好，准备上路了! According to the ne