求各种英语精英翻译一段~英翻中~（不要谷歌，有道等在线翻译）

求各种英语精英翻译一段~英翻中~（不要谷歌，有道等在线翻译）
Occupational health, as a discipline, is concerned with understanding the dynamic relationship between work on the one hand, and health on the other, and with protecting and promoting health by exploiting this understanding (Cox, 1993). This model of occupational health includes both the effects of work on health and those of health on availability and fitness for work and on work ability. Employment is a contractual arrangement in relation to work that adds extra psychosocial, organizational and legal dimensions to the occupational health equation. Occupational mental health is a sub-discipline focused on psychological illness, injury and disability and the role of work as a causal or contributing factor to this, but work is also an area in which the consequences of mental ill-health might be expressed (WHO, 2002c,2003). Building on this model, it is obvious that there are at least two different ways in which the relationship between work and mental health can be made manifest.