Reducing the environmental impacts of aquaculture is a significant task.

减少水产养殖业对环境的影响是一项重要的任务。

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Developing a purification technique remains a significant task in the field of carbon nanotubes research.

纳米碳管的纯化是纳米碳管研究领域的一个重要课题。

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Building and enriching people's spiritual world is a far-teaching strategic significant task and objective.

建设和丰富人们的精神世界是一项具有深远战略意义的任务目标。

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They found that patients showed significant improvement in the delayed verbal recall task, in which participants were asked to remember what they had been told earlier.

CNN: Nutritional drink, imaging show promise for Alzheimer's

The new federal plan, developed by the departments of Justice and Homeland Security, calls for doubling the number of border security task force teams and moving a significant number of other federal agents, equipment and resources to the border.

CNN: Obama to beef up Mexico border policy

It will be an extremely difficult task exacerbated by the current economic crisis and our need for significant tax cuts to spur growth.

WSJ: Rick Perry: My Tax and Spending Reform Plan