咬牙切齿: gnash the teeth in anger; bite one's lips and gnaw one's teeth; clench one's teeth in bitter hatred; gnash one's teeth in hatred; gnashing and grinding one's teeth; grind one's teeth with
It makes me gnash my teeth to see so much food deliberately destroyed or wasted when there are people starving in africa 当非洲人民在挨饿时,我看到这么多故意毁坏和浪费的食物,真使我气得咬牙切齿。