肺细胞约每周新老更替一次。Lung cells die and are replaced about once a week.昼夜更替.Day and night alternate.从事高等教育的人员新老更替极其缓慢。There has been very little renewal of personnel in higher education....
Immediately I've done it I feel completely disgusted with myself.我一做完那件事就对自己感到十分厌恶。I'm disgusted with the way that he was treated.他受到如此对待让我气愤。He was disgusted with the stodgy pizzas on sale in London.他讨厌吃伦敦卖的难以...