The first copy (see Figure 1) is performed by the direct memory access (DMA) engine, which reads file contents from the disk and stores them into a kernel address space buffer.

直接内存存取(direct memory access, DMA)引擎执行了第一次拷贝(参见图1)，它从磁盘中读取文件内容，然后将它们存储到一个内核地址空间缓存区中。

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For the most part, it avoids direct memory reference by native code into the JVM, ensuring that natives can be written once and work across different JVM implementations or versions.

从很大程度上说，它避免了本机代码对JVM的直接内存引用，从而确保本机代码只需编写一次，并且可以跨不同的JVM实现或版本运行。

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You don't have to search through too many blogs or Slashdot postings to find confidently worded statements like "Garbage collection will never be as efficient as direct memory management."

没有必要搜索众多的blog或Slashdot贴子，去寻找像“垃圾收集永远不会像直接内存管理一样有效”这样能够说服人的陈述。

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Although Carolyn has no direct memory of the experiment, and the scientists would not release any information about the subjects, she strongly suspects that she was able to delay gratification.

NEWYORKER: Don��t!

The researchers also found a direct link between the number of tangles and scores from memory tests carried out on the eight people before they died.

BBC: Clue to old age memory loss

Other improvements include more memory and the inclusion of a year of MSN Direct service.

ENGADGET: Switched On: The gist on your wrist