For composition teaching and studying should proceed in an orderly way and step b step, based on experiments, I formed an operation sequence pattern upon the speaking composition teaching pattern.

由于作文教学本身是一个循序渐进的过程，因而笔者又在试验的基础上建构了说作文教学模式的序列操作模式。

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Mitosis is an orderly sequence of events by which one parent cell becomes two daughter cells.

有丝分裂是指一个亲代细胞,变为两个子细胞的有序的过程

耶鲁公开课 - 生物医学工程探索课程节选