These aids would have been indispensable to very early people who would have found the process impossible without some form of mechanical aid.
远古人类会发现在缺少某种形式的机械辅助的情况下，这一过程是不可能实现的，这些辅助对他们来说不可或缺。
The tower’s main form was a twin helix which spiraled up to 400 m/1312ft in height, where visitors would be transported around with the aid of various mechanical devices.
这座塔的主要形式由一个双螺旋盘旋至400米/1312英尺高，参观者可借助多种机械设施传至螺旋体各处。
The tower's main form was a twin helix which spiraled up to 400 m/1312ft in height, where visitors would be transported around with the aid of various mechanical devices.
这座塔的主要形式由一个双螺旋盘旋至400米/1312英尺高，参观者可借助多种机械设施传至螺旋体各处。
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