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The left brain controls the physical functions of the right side of the body, which could be why most people write with the right hand.

左脑控制着右侧身体的生理功能，所以大多数人用右手写字。

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The left hemisphere controls movement in the right side of the body and, for most people, speech as well.

左半球控制身体右侧的活动，并且对大部分人来说，也控制着语言能力。

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For reasons that lie deep in the evolutionary history of the vertebrates, the right hemisphere deals with sensory input from the left-hand side of the body, and vice versa.

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Those have instead been moved to the left-hand side of the handset, towards the bottom of the body, below the hidden tray for the micro-SIM and microSD cards.

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