Some word historians say this expression comes from a board game called Snakes and Ladders.

一些文字学家说这个表达源自一个叫蛇梯棋的棋类游戏。

The cavern has 100 rooms connected by passageways as well as— you guessed it— snakes and ladders.

这个洞穴有 100 个房间， 通过通道以及— —你猜对了— — 蛇和梯子相连。