对当前技术的保守推断表明，每个书本大小的可移动硬盘(或者等价的非易失性内存芯片)能存储大约60兆字节。

Conservative extrapolation of current technology suggests that match-book size removable hard disks (or the equivalent nonvolatile memory chips) will store about 60 megabytes each.

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要完全理解volatile关键字的作用，首先应当理解线程如何处理非易失性变量。

To fully understand what the volatile keyword does, it's first helpful to understand how threads treat non-volatile variables.

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假如我写错了，我便用橡皮把写错的字擦失降。

If I make some mistakes, I use my rubber to erase the wrong words.

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