1.to fling caution to the winds
不顾一切；鲁莽行事收藏指正
2."Let go!"with these words ,fling caution to the winds he wanted to rush in.
“放开我！”他说着就想不顾一切地冲进去。收藏指正
3.Hearing that the enemies were planning to start a war, they decided to fling caution to the winds and attack the enemies first.
他们听说敌人在做战前部署，决定冒险先行袭击。收藏指正