動詞 prolong:

1. lengthen in time; cause to be or last longer
   同義詞：prolong, protract, extend, draw out
2. lengthen or extend in duration or space
   同義詞：prolong, sustain, keep up

形容詞 prolonged:

1. relatively long in duration; tediously protracted
   同義詞：drawn-out, extended, lengthy, protracted
2. drawn out or made longer spatially
   同義詞：elongated, extended, lengthened
3. (of illness) developing slowly or of long duration

1. The meeting may be prolonged into the evening because so many problems have to be solved tonight.
   會議可能要延長到夜里，因為今晚有太多問題要解決。
2. After prolonged discussion, the representatives hammered out a form of words that was acceptable to everyone.
   代表們經(jīng)過長時間的討論之后，終于想出一種大家都能接受的措辭方式。
3. The crowd burst into prolonged cheering.
   人群中爆發(fā)出長時間的歡呼聲。
4. After prolonged questioning, she finally confessed.
   她受到長時間的盤問之後，終於承認了。