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The unsatisfiable cases notably include a bunch of very laxe regexes like (.)+ or (.*)@(.*). The first regex could have been a property (minlength="1") and the second is obviously redundant (and less semantic) than the email input type since it just requires an at sign with at least one character before and after it.
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14 厘米这个设定大有考究，他表示，目前大部分乘用车的底盘离地间隙都在 14 厘米以上，低于这个高度，车轮基本可以直接跨过；一旦超过这个高度，底盘和电池包就会面临实打实的物理碰撞风险。
Local river defenders force U-turn by occupying grain terminal operated by one of US powerhouses of world trade