屋角放著一架小巧玲珑的折梯，说明架子上层的书也是准备随时取用的。
A pretty portable pair of steps in one corner of the room showed that those even on the higher shelves were intended for use.
现在，沿着山脊，登山者拥有了一些有利条件，包括跨越一条危险的冰瀑所架设的60多架铝梯以及几千码的已经布好的绳索。
Today, along the ridge, climbers have the advantage of about 60 aluminum ladders to cross a treacherous ice fall and thousands of yards of fixed ropes.
现在，沿着山脊，登山者拥有了一些有利条件，包括跨越一条危险的冰瀑所架设的60多架铝梯以及几千码的已经布好的绳索。
Today, along the ridge, climbers have the advantage of about 60 aluminum ladders to cross a treacherous ice fall and thousands of yards of fixed ropes.
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