三种可调式滚轮架：手动丝杆可调式、手动螺栓移位式和电动滑板移位式。
Three types of adjustable turning rolls: manual lead screw adjusting, manual bolt shifting and electric sliding plate shifting.
还有，上星期我的舌头被卷进电动打字机的滚轮，这叫我怎么还能相信上帝？
And how can I believe in God when just last week I got my tongue caught in the roller of an electric typewriter?
为了便于手持式电动剪刀的移动，在剪刀身的底部适当的位置安装适当数量的滚轮。
In order to move the hand-held electric shears conveniently, proper positions at the bottoms of the shear bodies are provided with a proper amount of rollers.
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