mans activity meaning in English

人类活动
人为影响

Characteristics of urban geologic hazard are that mans activity plays an important role in bourgeon , development and form process of geologic hazard
摘要城市地质灾害的特点在于，地质灾害的萌发、发展和形成过程中人类活动起了非常重要的作用。
On manned activities , ogcio has been organising roving shows , exhibitions and seminars , where video were played and information kiosks were set up for demonstration so that the public can experience the use of the services
政府资讯科技总监办公室经常举办流动展览及参加大型展览会和研讨会，并在会场播放宣传短片及设立资讯服务站，让市民从示范中亲身体验电子公共服务的好处。