• 1. 不易变的: not volatile
• 2. 不易变动的价格: non-flexible price
• 3. 不易变形褪色的: Difficult deformation faded

更多释义

• 1.在fp里，函数没有副作用，变量都是不易变的。而在OOP中，可变状态和副作用都十分常见，甚至是被鼓励的。
  In FP, functions have no side effects and variables are immutable, while in OOP, mutable state and side effects are common, even encouraged.
  dict.yoduao.com
• 2.键并不限制为整数；它可以是任何不易变的数据类型，包括 integer、float、tuple 或 string。
  The key isn't restricted to being an integer; it can be any nonmutable data type, including an integer, float, tuple, or string.
  dict.yoduao.com
• 3.Scala通过Actors库来支持这种模式，但是它同时允许mutable(易变的)和immutable(不易变的)变量。
  Scala supports this model with its Actors library, but it allows for both mutable and immutable variables.
  dict.yoduao.com

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