However, since tails don't fill up a complete block, they can waste a lot of disk space (relatively speaking, of course).

然而，因为这些tail不能填满一个完整的块，它们会浪费很多磁盘空间(当然是相对地说)。

youdao

In ReiserFS lingo, "tails" are files that are smaller than a filesystem block (4k) or the trailing portions of files that don't quite fill up a complete filesystem block.

在reiserfs术语中，“tail”是小于一个系统文件块(4 k)的文件，或不能填满一个完整的文件系统块的文件末尾部分。

youdao

The code here USES a local variable diff, which is only defined within this block of code, while later in the constructor a separate variable, fill, is declared at the same level.

这里的代码使用了一个局部变量diff，这个局部变量只定义在这一块代码范围内，之后在构造函数中又声明了另一个相同级别的变量fill。

youdao

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