He felt his limbs growing stiff with the unaccustomed chilliness of the night, and doubted whether he should be able to descend the steps of the scaffold.
他感到由于不惯于夜间的凉意，四肢逐渐发僵，并且怀疑自己还能否走下刑台的台阶。
Planes must zigzag from one ground beacon to the next, and ascend and descend in steps at each stage obtaining permission from the ground.
飞机从一个地面信标到下一个信标曲折飞行，在每一阶段都要经过地面的许可才能上升和下降。
When the water level was high, the user needed only to descend a few steps to reach it; when it was low, several levels would have to be negotiated.
当水位高的时候，使用者只需要往下走几个台阶就能到达井的部位；当水位低的时候，就要走好几层了。
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