When you are use-case modeling, your goal is to use actors to model roles and not the physical, real-world people, organizations, or systems themselves.
当进行用例建模时，您的目的是使用参与者来对角色建模，而不是对物理的、现实世界的人、组织或系统本身。
The fact that the same physical person might take on both roles at some juncture is irrelevant, there are two logical participants: the employee and the manager.
事实上，同一个自然人在某一时刻扮演两个角色并不冲突，因为有两个逻辑参加者：雇员和经理。
Support the change of roles among primary health care staff from working predominantly with physical disorders to a more holistic approach to health care that incorporates physical and mental health.
支持初级卫生保健工作人员中角色转变，从主要处理躯体病症转为将躯体和精神健康相结合的更为整体的卫生保健做法。
I have played the dual roles and understand firsthand the intense physical drain and the nervous energy that gets stirred up in both body and mind while preparing for it.
我已经饰演过这个双重角色，当为表演做准备时，亲身体会到体力和精神的巨大消耗。
The participants in a use case are not physical users, they are the roles that a physical user might have with respect to a system.
用例中的参加者不是自然用户，他们是可能与系统相关的自然用户的角色。
A UI-style use case would typically be interested only in the roles taken on by the physical users of the system.
UI样式的用例通常只会关心系统的实际用户所扮演的角色。
Chemical neutralization reactions play the main roles in the process of absorbing SO2, and physical adsorption is secondary.
拜耳赤泥吸收SO2的过程起作用的主要是化学中和反应，其次是物理吸附。
Technological advances have replaced purely physical strength, allowing women to fill more roles in the society.
科技进步已经替代了单纯的身体力量，这就允许女人来填充更多的社会角色。
More specially, physical concepts are required to understand folds, faults, and diapirs, and hence their roles in petroleum entrapment.
更为特别的是，在理解褶皱、断层和底辟以及它们在石油圈闭过程中的作用时需要物理概念。
This reversal of the roles is incompatible with our physical record that one meter stick is shorter than the other.
这种地极的互换和一根杆比另一根杆短的物理记录是矛盾的。
Their roles can be summarized as the three major role: the formation of their own physical structure, providing energy and regulate metabolism of.
它们的作用可概括为形成自身的物质结构、提供能量和调节代谢等三个主要的作用。
Quantum dots (QDs), with zero-dimensional electronic properties, have stimulated great interest due to their important roles in fundamental physical research and for developing novel devices.
由于半导体量子点具有零维电子特性，它不仅成为基本物理研究的重要对象，也成为研制新一代量子器件的基础。
This thesis discuss the meaning of preschool music education, and the roles it plays to the physical and psychological development and the music capacity of preschool children.
本文对学前儿童音乐教育的涵义以及如何对学前儿童身心、音乐能力的促进进行了探讨。
They play important roles in deciding the context, the pattern, the organization and management of physical activities.
群众体育活动指导者在决定活动内容、方式和活动的组织管理过程中具有较大的影响作用。
Physical concepts are not only playing important roles in the physical science but also the teaching difficulties.
物理概念在物理学科中占有举足轻重的地位，同时也是教学的难点所在。
It not only affects society, economy and culture, but also brings a series of changes to older people themselves in terms of social roles, physical health and mental well-being, to name a few.
人口的老龄化不但可以给社会、经济、文化带来不同程度的影响，而且也对每个老年人的社会角色、身心健康等带来一系列的变化。
But one thing is for sure: it draws our attention to China's physical and intangible walls and forces us to examine their roles in the modern world.
但是有一点是肯定的：它让我们注意到了中国存在着有形的和无形的墙，并迫使我们审视这些墙在今天社会中所扮演的角色。
You can then use a physical or virtual environment that contains these roles to run your tests from your test plan.
接著，您可以使用包含这些角色的实体或虚拟环境，透过测试计划执行测试。
As shown in the physical model, the stability of arc plasma and the directionality of carbon particles played important roles in the formation of carbon nano-structures.
根据液体电弧放电模型可知，电弧的稳定性和碳粒子运动的定向性对纳米结构的生成过程有重要影响。
By using non-hydrostatic model MM5 V3, a snow took place on dec. 7,2001 in Beijing is simulated. The roles of cloud and micro-physical process are analyzed.
应用非静力平衡MM5V3模式对2 0 0 1年1 2月7日一次北京降雪过程进行了数值模拟试验，对云和降水物理过程的作用进行了初步分析。
By using non-hydrostatic model MM5 V3, a snow took place on dec. 7,2001 in Beijing is simulated. The roles of cloud and micro-physical process are analyzed.
应用非静力平衡MM5V3模式对2 0 0 1年1 2月7日一次北京降雪过程进行了数值模拟试验，对云和降水物理过程的作用进行了初步分析。
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