phrase
C2
When someone, especially a child, behaves without any control or rules.
During the summer, the kids are allowed to run wild in the backyard.
夏天的时候，孩子们被允许在后院里无拘无束地玩耍。
C2
When someone's thoughts or imagination are not controlled and become very active.
As I walked through the haunted house, my imagination began to run wild.
当我走过鬼屋时，我的想象力开始天马行空。
translation
放纵无度, 天马行空