常見例句雙語例句The electric toothbrush comprises a protecting cover, a rotary brush head, a rotating shaft, a power handle and a control switch.它包括保護罩、旋轉(zhuǎn)刷頭、轉(zhuǎn)軸、動力手柄和控制開關(guān)。ip.com 返回 electric rotating switch