you can match a string by repeatedly taking derivatives for each character. when you’ve consumed the entire input, you check if the resulting regex accepts the empty string (is “nullable”). if yes, the original string matched.
比亚迪再次将目光聚焦至电动化。3月5日晚，比亚迪举行技术发布会，正式对外发布第二代刀片电池及闪充技术。
，更多细节参见同城约会
That mismatch has puzzled astronomers for years. Getting answers would inform how researchers understand galaxies more broadly, and the heart of the Milky Way offers the only galactic center close enough for this type of intricate study.，更多细节参见体育直播
if typing.IsAssignable[typing.GetType[p], Property]