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A giant panda cools off during a hot summer day in its enclosure at the Moscow Zoo, in Moscow, Russia, July 12, 2021. (Photo/Agencies)
![](http://www.ecns.cn/hd/2021/07/14/937f57c0055a4cd586a1115446ae1783.jpg)
A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo in Moscow, Russia, July 12, 2021. (Photo/Agencies)
![](http://www.ecns.cn/hd/2021/07/14/48dfbdf3ced64e18ad67d2f4cd0552ed.jpg)
A polar bear cools off during a hot summer day in its enclosure at the Moscow Zoo in Moscow, Russia, July 12, 2021. (Photo/Agencies)
![](http://www.ecns.cn/hd/2021/07/14/119bdf22c4204bd9915c2c048e3cb794.jpg)
Children play with sprayed water during a hot summer day at the Moscow Zoo, in Moscow, Russia, July 12, 2021. (Photo/Agencies)