Based on these situations, the study on the development of Agricultural Economic Cooperative Organization (AECO) in China is chosen.

本文正是基于这一形势，对我国农业经济合作组织进行研究，主要研究框架如下。

youdao

Since the Artic does not have a unified set of environmental policies, the AECO published a discretionary set of guidelines for visitors and operators that are aimed at protecting the environment, ensuring safety and promoting cultural sensitivity and social interaction with locals.

BBC: Life in the fragile, frozen Arctic