我们会说话之前就已经学会用手指东西，所以鼠标是一个很自然的指针设备。

We learn to point at things before we learn to speak, so the mouse is a very natural pointing device.

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其中一个男孩，用手指向花园里的一件东西。

One of the boys was pointing at something in the garden.

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其中一个男孩，用手指向花园里的一件东西。

One of the boys was pointing at something in the garden.

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