单词immutable
adj.: 不可改变的；永恒不变的
网络: 不可变；不可变的；永恒的
不可改变的；永恒不变的:
that cannot be changed; that will never change
不可改变的;永远不变的
adj.unchangingirreversiblepermanentfixedabsolute
adj.mercurial
These interfaces are intended to represent views into a collection, but they do not ensure the collection itself is immutable.
这些接口是用来表示针对某集合的一些视图，但是接口并不确保该集合本身是不变的。
When writing a class, it is always worthwhile to ask yourself whether this class could be effectively implemented as an immutable class.
在编写类时，问问自己这个类是否可以作为不变类有效地实现，总是值得的。
Round and round here went the enormous revolutions of the dark colossal water- wheel , grim with its one immutable purpose .
那只黑黑的大水车轮转来转去转个不停，象是它有一种不可改变的可怕的意图。
There"s no doubt that the restriction to only capturing immutable state from the lexical context is quite irritating to programmers.
毫无疑问，仅从词法上下文捕获不变的状态这一限制，令程序员非常不满意。
At the beginning of this article, I said (in a rather winded manner) that a string in Python is an immutable sequence of characters.
在本文的开头部分，我着重强调了Python中的字符串是不变的字符序列。
Making files immutable is often done as part of a security or intrusion detection effort.
使文件不可变通常是安全或者入侵检测工作的一部分。
How deep and immutable is all this?
这一切的影响有多深远和不可改变呢？
Further, for data members that are object references, the referred-to objects must be effectively immutable.
此外，对于对象引用的数据成员，引用的对象必须是有效不可变的。
So, now, for the moment of truth, I present a set of principles that together form what I call The Seven Immutable Laws of Investing.
所以，现在是揭晓的时候了，我提出了一套原则，这些原则共同构成我所称的七条永恒的投资法则。
Use the lsattr command to see whether the immutable flag (or any other attribute) is set for a file or directory.
使用lsattr命令查看文件或者目录是否设置了不可变标识（或者任何其他属性）。