entity

• The north american continent is made up of three great structural entities .
  北美大陆是由三个构造单元组成的。
• A vector quantity is an entity with a magnitude and a direction in space .
  矢量是空间中既具有大小又具有方向的量。
• But how can we make a reality of the european entity if we don't speak together ?
  我们如果不共同发言，怎么能体现欧洲统一呢？
• One should be alert to involvement of other organ systems in diagnosing these entities .
  诊断这些疾病时，应警惕其它器官系统受到连累。
• The zygote is best appraised by stating that it is an inherently unstable entity .
  最合适地评价接合子，应该说它是一个内在不稳定的统一体。
• The chair form was a rigid, stable entity incapable of interconverting to other form .
  椅子结构是一种刚性的，不能转变为其他形式的稳定实体。
• Man's brain has given him enormous power in becoming a significant environmental entity .
  智能给予人类以巨大的力量，使他成为重要的环境实体。
• Mendelian gene is not a real physical entity but an abstraction or symbol .
  孟德尔式的基因并不是真正的实体，而是抽象概念或者是说明性的符号。
• Another approach is to describe the findings of epidemiology in relation to disease entities .
  另一个思路就是描述与疾病本质有关的流行病学表现。