heedlessly       
adverb uk/ˈhiːd.ləs.li/ us/ˈhiːd.ləs.li/
 草率地|轻率地
in a way that does not give attention to a risk or possible difficulty
  Mankind is heedlessly destroying the planet. 人类在很轻率地破坏地球(生态环境)。 
 Such warnings should not be heedlessly disregarded. 这样的警告不应该被无视。 
 See: heedless
 - More examples
 - The economy has been living off borrowed money and heedlessly consuming natural resources like oil.
 - Swimmers who dive heedlessly into the sea may face huge fines if they are not in permitted areas.
 - By heedlessly mishandling a young girl's infatuation, Onegin sows the seeds of his own destruction.