It maintains the file descriptor state on the requested file descriptor set across system calls.

它跨系统调用在请求的文件描述符集上维护文件描述符状态。

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In some cases, you can also map a file descriptor to a plain file or another device into memory.

在某些情况下，还可以把一般文件或另一个设备的文件描述符映射到内存。

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To resolve this, once you create a temporary file atomically, you must always use the file descriptor or file stream you got when you opened the file.

解决这种问题的方法是，一旦自动创建了一个临时文件，就必须始终使用打开该文件时得到的文件描述符或文件流。

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