更改

Eddington then gives three points to note about this arrow:

Eddington then gives three points to note about this arrow:

关于这个箭头，爱丁顿给出了三点注意事项:

关于这个箭头，爱丁顿指出了三个特点:

  It makes no appearance in physical science except in the study of organization of a number of individuals. (By which he means that it is only observed in entropy, a statistical mechanics phenomenon arising from a system.)

  It makes no appearance in physical science except in the study of organization of a number of individuals. (By which he means that it is only observed in entropy, a statistical mechanics phenomenon arising from a system.)

除了研究一些个体的组织结构外，它在自然科学中没有出现。(他的意思是时间之箭只有在熵中才能观察到，而熵是一个系统产生的统计力学现象。）

除了在研究一些个体的组织结构外时，它在自然科学中没有出现。(他的意思是时间之箭只有在熵中才能观察到，而熵是一个系统产生的统计力学现象。）