要加载跨越16字节边界的值会十分困难，因为必须要将其存储到两个寄存器，进行移位然后再对它们进行掩码和组合。

To load a value which crosses a 16-byte boundary is even more difficult, as you would actually have to load it into two registers, shift them, and then mask and combine them.

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它们也可以作为运行单元跨越程序的生命周期，并针对每个程序或方法条目重设初始值。

They can also span for the lifetime of a program as run units and are reset to their initial value on each program or method entry.

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选择组件(selection component)允许值跨越多个信息域。

Selection components allow values to cross between information domains.

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