而在 GRBAC 中,角色还与其他对象和系统的状态相关,称为环境角色(Environment Role,ERole),可认为环境角色是与当前访问控制决策相关的某种外部环境上下 文的类型抽象,如时间段。
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Not just for health reasons, but also because it plays a vital role in protecting the environment.
不仅是因为健康的原因,还因为它在保护环境中扮演着重要的角色。
How does CCAMLR define its role in the conservation of the Antarctic environment?
CCAMLR 如何定义其在南极环境保护中的作用?
With the rapid development of the economy, China is assuming a greater role in the protection of the environment.
随着经济的快速发展,中国在环境保护方面发挥着越来越大的作用。
The natural environment plays an important role in his documentaries and other movies.
VOA: special.2009.03.25
The respiratory system plays an important role in maintaining our internal environment at the proper level of oxygen, by bringing the right amount in.
呼吸系统的重要性在于,通过向体内输入适量的氧气,维持人体内环境中的氧平衡
We must be extra vigilant, The government must play its role as to make the environment safe and remove all environmental factors cancer. (OMITTED) Good sources of drinking water, he says,will stop people from going to streams and ponds, where they get infected with some of these organisms.
VOA: standard.2010.06.16
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