prolonged
动词 prolong:
lengthen in time; cause to be or last longer
同义词:prolong, protract, extend, draw out
lengthen or extend in duration or space
形容词 prolonged:
relatively long in duration; tediously protracted
同义词:drawn-out, extended, lengthy, protracted
drawn out or made longer spatially
同义词:elongated, extended, lengthened
(of illness) developing slowly or of long duration