“难耐”的英语可以翻译为：impatience，intolerability ...

场面非常刺激撩人，我感到欲火难耐。It was extremely hot and I was feeling rather randy.接近华氏100度的高温让他们感觉酷热难耐。They sweltered in temperatures rising to a hundred degrees.下午令人难耐的高温让他完全精疲力竭。The oppressive afternoon heat had quite tired him out...