卡片底色有三种选择：经典黑、大理石绿、大理石白。

Tiles are available in different background colours: classic black, funmarbled green or stylish marbled white.

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一个棋手使用白石，另一个则使用黑石。

One player uses the white stones and the other, black.

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另一名警卫从铺着光滑白石的桌面上拿起座机打了个电话。

Another guard makes a phone call from a desk topped with a smooth slab of white stone.

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