The people there were able to divide the sky into symmetrical boxes, according to the main directions, north, east, south and west.

根据主要的东南西北方位，那里的人们可以将天空分成对称的区域。

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They divide snow into four main categories, such as snow lying on the ground, snow floating in the sky, snow piling up, and snow piles.

他们把雪分为四大类，如地上的雪、飘在空中的雪、积雪和雪堆。

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The urban-rural knowledge and education divide is today's main barrier to achieving universal primary education by 2015.

城乡之间知识和教育鸿沟是今天阻碍2015年普及初等教育的主要障碍。

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Most analysts point to China's growing income gap and the rural-urban divide as the main causes of social instability in the country.

FORBES: Leadership

Looking for solutions, they divide treatment for patients into three main categories.

BBC: "Very significant heat in the system"

The Spotlight survey suggests the main parties have a long way to go to reach across the religious divide.

BBC: Opinion poll indicates NI voters would reject Irish unity