如何正确取下口罩How to properly take off a mask. Disposable face masks should be used once and then thrown in the trash. Lucy Gao from Beijing United Family Hospital shows how to properly take off a mask. 一次性口罩应使用一次,然后丢入垃圾桶。 北京和睦家医院的露西高(Lucy Gao)演示了如何正确取下口罩。