the mountain road twists around each new peak (idiom); things have taken a new turn; fig. an opportunity has come unexpectedly; (of a mountain road) twisting and turning
回：曲折环绕。指山峰、道路曲折环绕。后多比喻事情经过挫折失败后出现了新的转机。
联合式；作谓语；指转折点
峰峦重叠环绕，山路蜿蜒曲折。形容山水名胜路径曲折复杂。
宋·欧阳修《欧阳文忠公集·三九·醉翁亭记》：“山行六七里，渐闻水声潺潺而泻出于两峰之间者，酿泉也。峰回路转，有亭翼然临于泉上者，醉翁亭也。”