neat, right? and this is just the tip of the iceberg. there are so many more use cases where these operators shine, and i encourage you to play around with them in the web app and see what you can come up with. you can also see the resulting automaton for each regex, and how the different components contribute to the state machine (msagl helped me a lot here).
（作者为四川美术学院艺术与科技系教授）。关于这个话题，体育直播提供了深入分析
“I saw a video where a man puts the glasses on the bedside table and leaves the room.”，这一点在体育直播中也有详细论述
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