short ladder meaning in Chinese

两节拉梯

Into this tent i brought all my provisions , and every thing that would spoil by the wet , and having thus enclos d all my goods , i made up the entrance , which till now i had left open , and so pass d and re - pass d , as i said , by a short ladder
我把粮食和一切可能受潮损坏的东西都搬进了帐篷。完成这工作后，就把篱笆的出入口堵起来。此后，我就像上面所说，用一个短梯翻越篱笆进出。
The entrance into this place i made to be not by a door , but by a short ladder to go over the top , which ladder , when i was in , i lifted over after me , and so i was compleatly fenc d in , and fortify d , as i thought , from all the world , and consequently slept secure in the night , which otherwise i could not have done , tho , as it appear d afterward , there was no need of all this caution from the enemies that i apprehended danger from
至于住所的进出口，我没有在篱笆上做门，而是用一个短梯从篱笆顶上翻进来，进入里面后再收好梯子。这样，我四面都受保护，完全与外界隔绝，夜里就可高枕无忧了。不过，我后来发现，对我所担心的敌人，根本不必如此戒备森严。