• 1. Changing Constraints: 改变约束 | 修改约束 | 改变约束类型
• 2. Adding and Changing Constraints: 添加更改约束条件

• 1.These changing constraints tend to get lost in a "monolithic" class diagram that does not take state into account.
  这些不断更改的约束在不考虑状态的“单态”类关系图中容易丢失。
  dict.yoduao.com
• 2.You should only override this method when changing constraints in place is too slow, or when a view is producing a number of redundant changes.
  你只因该在添加约束过于慢的时候，或者一次要修改大量约束的情况下重写次方法。
  dict.yoduao.com
• 3.But unlike most couriers, aid donors operate amid chaos, with rapidly changing constraints (surges of people, outbreaks of disease, attacks by warlords).
  不过，同大多数快递公司不同的是，援助人员是在混乱之中行动，受到瞬息万变的条件限制(人潮的蜂拥、疾病的爆发、军阀的袭击)。
  dict.yoduao.com

©2026 网易公司