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.
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.
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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