上个星期，公共安全部门勒令警方停止该行为。
Last week the Ministry of Public Security ordered police to stop such practices.
接近零陵区公共安全部门的人向财新网证实，信件确实存在。
Speaking to Caixin, a source close to the Lingling district public security department confirmed the letter's existence.
公共安全部门发出通报说，旅客遇到了时速高达35英里的强风刮来的飞雪。
Travelers encountered blowing and drifting snow, driven by wind gusts up to 35 MPH., the Department of Public Safety said in an advisory.
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