Apparently, it's supposed to recognise phone numbers and seems to come from the Elementor WordPress builder, which would explain why the same regex occurs so frequently. It also seems that the code is embedded as hidden on many, many pages, further boosting the number of hits since my analysis cannot tell the difference between a visible and an invisible element. Elementor offered no straightforward way to report this bug, so I gave up.
All security forces pledged to serve their new commander-in-chief until their "last drop of blood".
。新收录的资料是该领域的重要参考
$ Assert end of line。关于这个话题，新收录的资料提供了深入分析
Певцов резко высказался об иностранных псевдонимах российских артистов14:12。关于这个话题，新收录的资料提供了深入分析
The National Wallace Monument in Stirling was lit up in orange to mark the announcement