The electric toothbrush comprises a handle and bristles.

由刷柄和刷毛构成。

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The electric toothbrush comprises a protecting cover, a rotary brush head, a rotating shaft, a power handle and a control switch.

它包括保护罩、旋转刷头、转轴、动力手柄和控制开关。

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He has developed several prototypes of hand-cleaning devices that can be mounted on walls, as well as a portable, battery-operated model the size of a large electric toothbrush.

他发明了好几种洁手装置的原型机，这些机器可以悬挂在墙上，跟那种便携式的电动模型一样，大小相当于一支较大的电动牙刷。

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Instead, it would recharge like an electric toothbrush whenever the car is stacked.

FORBES: Car Sharing

Yet I am that rara avis, the male of the species who does not own any power tools, other than an electric toothbrush, and who has not been making unnecessary noise nonstop since kindergarten.

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