Selling Yunnan's fresh air could also be seen as a way to raise concern about the pollution issue, Hu Kailin, an environmental science expert said.

同时，环境科学专家胡凯琳表示，此次事件也可以提高人们对于空气污染的关注度。

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Some people in the Aurora community who were traumatized by that mass killing have already been calling a hotline in the city, says Mara Kailin, program director at the Aurora Mental Health Center.

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