adj.不加注意，掉以轻心

He was heedless of the danger he was putting himself in.
他对他把自己置于的危险毫不在意。
She drove heedlessly down the busy street, almost causing an accident.
她在繁忙的街道上驾车全然不顾，差点引发一场事故。
The young explorer's heedlessness led him to ignore the warnings of the locals about the treacherous terrain.
那位年轻的探险家的疏忽大意使他忽视了当地人对险恶地形的警告。
Despite repeated reminders, he remained heedless of his deadline and submitted the report late.
尽管反复提醒，他仍然对截止日期毫不在意，并且迟交了报告。
His heedlessness with money quickly landed him in debt.
他对金钱的大手大脚很快让他负债累累。
The captain's heedlessness cost the lives of many sailors on board.
船长的疏忽大意导致船上许多水手丧生。
She continued her heedless spending spree, oblivious to the impact it would have on her future.
她继续她的疯狂购物狂欢，对她未来的影响视而不见。
The heedlessness of the children playing near the cliff edge had their parents on edge.
孩子们在悬崖边玩耍的鲁莽行为让他们的父母十分紧张。
In his youth, he was often accused of being heedless and impulsive.
在他年轻的时候，人们常常指责他的轻率和冲动。
Even after the incident, the company seemed heedless of the potential consequences of ignoring safety regulations.
即便发生了那起事件，公司似乎仍对无视安全规定可能产生的后果置若罔闻。