“再三”的意思是一次又一次，很多次地做同一件事。

"再三" means doing the same thing again and again, many times.

这个词常用在比较正式的场合，比如“再三考虑”或“再三提醒”。

This word is often used in more formal situations, such as "再三考虑" (consider repeatedly) or "再三提醒" (remind repeatedly).