The theory of SM believes that the representation of SM concerns at least five dimensions, such as (1) space, (2) time, (3) entity, (4) causality and (5) intention.
情境模型理论认为人们在理解信息的过程中至少需要建构5个维度，即：（1）空间，（2）时间，（3）实体，（4）因果，（5）目的等。
The modern logistics is a scientific management processing information exchange through high-tech means via computers, establishing on the basis of flowing materials entity in the time and space.
现代物流是建立在时空流动的物质实体基础上，引入高科技手段（如通过计算机）进行信息联网的科学管理。
A mathematical structure is an abstract, immutable entity existing outside of space and time.
数学结构是一种抽象、不可变的实体，超脱于时间与空间之外。
A mathematical structure is an abstract, immutable entity existing outside of space and time.
数学结构是一种抽象、不可变的实体，超脱于时间与空间之外。
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