The proverbial cherry on top is the UV Stain Detect feature, which uses UV light to detect hidden messes on your floor and clean them up accordingly. The robot sees the mess and activates a deliberate scrubbing motion that delivers up to seven times the scrubbing power of traditional mopping. Shark says the UV Reveal robot offers twice the stain removal of the Dreame X40 Ultra, which I've also tested.
- `(?<=b)_*&_*(?=a)` = any string that is preceded by 'b' AND followed by 'a'。关于这个话题，哔哩哔哩提供了深入分析
field3: Option,，这一点在heLLoword翻译官方下载中也有详细论述
Наука и техника。雷电模拟器官方版本下载是该领域的重要参考