Therefore, the amount of time required for any particular memoryaccess is completely unknown (if the memory is swapped out, who knows how long it will take).
因而，某一内存访问所需的时间是完全未知的(如果内存被换出，所需时间的长短是不可知的)。
2
We've also presented and explained how to use several powerful new features, such as revalidation in memory and access to type information — something developers have been asking for for a long time.
Why can't you access a 4 byte long variable in a single memoryaccess on an unaligned address(i. e. not divisible by 4), as it's the case with aligned addresses?