The improving economies in some countries could have played a partin the positive assessment among employees.

某些国家经济实力的增强可能也促使更多员工给出正面评价。

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"It is true that doing wind in urban environments is a lot trickier than in rural environments, " said Johanna Partin, San Francisco's Renewable Energy Program manager, who also coordinates the task force.

CNN: Stimulus may get small wind turbines spinning