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give the same smug lectures about "safety" we have all heard dozens of times before
，这一点在safew官方下载中也有详细论述
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（二）业务之间具有明显的主附关系。主要业务居于主体地位，体现交易的实质和目的；附属业务是主要业务的必要补充，并以主要业务的发生为前提。
Nature, Published online: 25 February 2026; doi:10.1038/s41586-026-10137-y