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Venus also has tesserae , or tiles - raised areas in which many ridges and valleys have formed in different directions .

金星也有马赛克片，或叫瓷砖即在不同方向形成的有着众多山脊和山谷的隆起地区。

It is thought that the mosaic was made by north african artists because some of the tesserae ( pieces for the mosaic ) are african .

据称，马赛克是由北非的艺术家所制作的，因为其中的一些镶料（马赛克的部件）是非洲出产的。

Mosaic pieces , or tesserae , are usually small squares , triangles , or other regular shapes .

马赛克块通常是小方形，三角形或其它规则形状。

" Mosaic pieces , or tesserae , are usually small squares , triangles , or other regular shapes . "

马赛克块通常是小方形、三角形或其它规则形状。