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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A problematic task was defined as one for which a significant gap existed between its estimated implementation time and the actual time it took to accomplish it.

未决任务被定义出来因为在估算实现时间和实际完成时间之间存在显著的差异。

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Notice that there has been significant growth in Map.Entry, Task, and int objects between the two snapshots.

注意两次快照相比，Map . Entry、Task和int对象有了显著增加。

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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

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

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