turning point的复数形式怎么写？

n.转折点，关键时刻...

The turning point in the process of growing up is when you discover the core of strength within you that survives all hurt.当你从内心深处找到一种可以忍受一切痛苦的坚强力量时，你的成长历程就会出现飞跃。Hungary's opening of the border was a turning point f...

turning point的音标：turning point的英式发音音标为：['tɜ:nɪŋ pɔint]turning point的美式发音音标为：['tənɪŋ pɔɪnt]...