ADJ-GRADED 彬彬有禮的;(尤指兒童)規規矩矩的 If you describe someone, especially a child, as well-behaved, you mean that they behave in a way that adults generally like and think is correct. 彬彬有禮的;(尤指兒童)規規矩矩的
...well-behaved little boys.
乖巧的小男孩們
The troops have been remarkably well-behaved so far.