One area in which they have not improved, though, is their power supply.
然而其供电系统一直都没怎么改善。
On average the quality of governance around the world has not improved much.
平均来看，世界各国的治理质量改进不大。
Quality has improved. 7. Quality has not improved.
品质已有改进 。 品质未见改进。
Quality has improved. 7. Quality has not improved.
品质已有改进 。 品质未见改进。
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