比如，你可以从左至右从顶端刷你的牙齿的外面，然后移到里面从右至左。

For example, you can brush the outer sides of your teeth from left to right across the top, then move to the inside and brush right to left.

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因此，旧建筑物的轮廓仍然可见的，并可以从外面看到里面。

The contour of the old building thus remains visible, and the inside can be seen from outside.

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这个建筑邀请人们从外面进入到里面。

The « territory building» invites people from the outside to embark ona journey inside.

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