but there’s a problem with the classical formulation. the derivative takes a regex and a character, so to build a state machine you need to compute it for every possible character to get all transitions from a given state. sure, you can compress the number of characters into equivalence classes before, but you still have to compute for each equivalence class - and many of them end up leading to the same state anyway. for example, the regex abc (below) cares about a, b, c, and “everything else”, which brings us down from 65536 to 4 in UTF-16, but for the first node (abc) even b and c behave the same as “everything else”. so what are we computing these for? in other words, there is something left to improve here.
第一百五十四条 光船租赁合同的内容，主要包括出租人和承租人的名称、船名、船籍、船级、吨位、容积、航区、用途、租船期间、交船和还船的时间和地点以及条件、船舶检验、船舶的保养维修、租金及其支付、船舶保险、合同解除的时间和条件，以及其他有关事项。，这一点在新收录的资料中也有详细论述
，详情可参考新收录的资料
The humans in the book aren’t super men and women, but neither are they cynical individualists. They’re just competent people working together as a team.，推荐阅读新收录的资料获取更多信息
他把這場衝突定性為「一場本不應發生的戰爭，也是一場對各方都沒有好處的戰爭」，並呼籲「立即停止軍事行動，防止局勢輪番升級，避免戰火外溢蔓延」。