经济学家迈克尔·赫德森的研究揭示了这个体系更深的逻辑：各国之所以“不得不”持有美元、买入美债，是因为整个国际贸易体系是被强制性地用美元计价的——首先是石油，然后是大宗商品，然后逐渐蔓延到几乎所有重要的国际贸易品。
the option flag is not considered for the sake of optional arguments.
，详情可参考体育直播
As an aside: the early 386's POPAD instruction has a famous bug. EAX is written in the RNI (run-next-instruction) delay slot via an indirect register file access -- the only instruction that does this. When the next instruction uses a base+index addressing mode, the register file write from POPAD collides with the EA calculation's register file read, corrupting the address. A fitting example of how complex optimizations can lead to problems.。safew官方下载对此有专业解读
（四）其他需要重点保护的区域。