16-04-27 Beijing is planning to build a web of ventilation corridors to facilitate air flow and blow away smog and pollutants, municipal authorities said on Saturday. 2月20日，北京市委宣布称，北京正计划建立通风廊道网络系统，以促进空气流通，吹走雾霾和污染物。...

11-05-17 A miniature, easy-to-carry ventilation（通风设备） system with a simple nasal mask may help patients with chronic obstructive pulmonary disease ( COPD慢性阻塞性肺炎 ) become more active, according to research conducted at medical centers in Californ...