尽管每个命令当然都有一些隐蔽的字符序列，那些次序之间存在着一致性。
Although there certainly are some cryptic character sequences for commands, those sequences have consistency.
序列的次序无关紧要。
序列用于定义对象的次序，比如机构中人员角色的层次结构。
Sequences support a defined sequence for an object, such as the hierarchy of a person's role within in an organization.
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