海绿石

It is, he says,"a document of the tribute system of the empire", with pieces of turquoise from mines that were over 1,000 miles apart, white teeth carved from shells found on both coasts of Mexico, and red details made out of Spondylus, a thorny oyster shell found 60 metres below the surface of the sea.

MacGrego说，双头蛇是&皇朝祭祀的证明&，它身上的绿松石来自与地下1000米的矿藏，白色的牙齿用墨西哥两岸的贝壳雕刻而成，红色的尾巴取自于海菊哈，这是一种在海面下60米才能找到的带刺哈利壳。

It is, he says,"a document of the tribute system of the empire", with pieces of turquoise from mines that were over 1,000 miles apart, white teeth carved from shells found on both coasts of Mexico, and red details made out of Spondylus, a thorny oyster shell found 60 metres below the surface of the sea.

Neil MacGregor说：&这幅画表明了阿兹特克帝国的贡赋体系&，因为这幅画中，镶嵌的绿松石产自1000公里之外的地方，白牙由采自墨西哥东、西海岸的贝壳雕成，红色细部取自一种带刺的海菊蛤属牡蛎壳，而这种牡蛎生长于海面下60米深的地方。

Patterns in Nature: Coral Rigid coral branches present the illusion of fluid movement in a turquoise sea near the Turks and Caicos Islands.

意译：珊瑚在自然界的模式。硬珊瑚分支目前的假象流体运动在绿松石海靠近特克斯和凯科斯群岛。

The split between the two groups can hardly be papered over.

这两个团体间的分歧难以掩饰。

This approach not only encourages a greater number of responses, but minimizes the likelihood of stale groupthink.

这种做法不仅鼓励了更多的反应，而且减少跟风的可能性。