| 摘要 |
A portable electronic device comprising a first panel supporting a user-operable input device on a first face and a second panel mounted for slidable movement over the first face of the first panel between a first position in which the user-operable input device is concealed and a second position in which the user-operable input device is exposed and, when the second panel is in the second position, for pivotal movement towards the face of the first panel.
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