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公司也在年报中也坦言，“中国汽车产业迈入智能化与电动化深度渗透期，市场竞争加剧。随着主机厂降本需求增加，作为零部件供应商，德赛西威面临毛利率被进一步压缩的风险。”
，这一点在体育直播中也有详细论述
this isn’t just an academic curiosity. flip the alternation order to (ab|a)+ and suddenly PCRE matches the entire string! the | operator in backtracking engines is ordered - it’s not union, it’s “try left first”. the order of branches changes the result, which means | is not commutative. a|b and b|a can give different matches.
▲ 图片来自：Autoblog