As an important component of the double-tier operation system, the collective operation in China' s rural areas is based on the collective ownership of rural land.

农村集体统一经营以农村土地集体所有为基础，是双层经营制度的重要组成部分。

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This may not have been an official joint operation, but it was almost certainly a collective effort.

也许这次并不是官方的联合行动，但几乎可以肯定是一次集体的努力。

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The global community has demonstrated unprecedented levels of co-operation and collective action in dealing with SARS, influenza and other threats to bio-security.

在应对严重急性呼吸道综合征、流感和其它生物安全威胁的过程中，全球社区在合作与集体行动方面显示了空前的水平。

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The researchers will also seek to establish whether different religions foster different levels of co-operation, for what reasons, and whether such co-operation brings collective benefits, both to the religious community and to those outside it.

ECONOMIST: The science of religion

For now, what began on October 6 as an operation by the Anonymous hacker collective targeting the Los Zetas cartel in Mexico has morphed into an effort by Barrett Brown to investigate allegations of corruption by a District Attorney in North Carolina.

FORBES: OpCartel Focuses on North Carolina District Attorney