| 摘要 |
A portable electronic device includes a plurality of physical keys, a touch-sensitive input device configured to detect a touch, and a processor coupled to the touch-sensitive input device, and the keys, and configured to, when no touch is detected on the touch-sensitive input device while a first key of the plurality of physical keys is selected, identify a first character associated with the first key, and when a touch is detected on the touch-sensitive input device while the first key is selected, identify a second character associated with the first key.
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