Therefore, light rays emitted by the luminous source of the handheld electronic device can be uniformly transmitted from the keys.
由此，该手持电子装置的发光源所发出的光线能够均匀地从按键透射出。
Therefore, light rays emitted by the luminous source of the handheld electronic device can be uniformly transmitted from the keys.
由此，该手持电子装置的发光源所发出的光线能够均匀地从按键透射出。
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