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The environment protection in Beijing really made a big progress, it was our first time to see so blue sky in Beijing.
北京的环保真的有很大进步,这是我们第一次在北京看到蓝天!
youdao
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The environment protection in Beijing really made a big progress, it was our first time to see so blue sky in Beijing.
北京的环保真的有很大进步,这是我们第一次在北京看到蓝天!
youdao