1. All his attempts to improve were vitiated by his lack of will power. 他想要取得进步的所有努力都由于意志力的缺乏而付诸东流了。
2. But so far his presidency has been vitiated by a combination of incompetence and a willingness to fall back on the very tactics that he denounced as a candidate. 但到目前为止，他的总统任期已经被那些回到完全是他作为候选人时所谴责的旧路的想法和无能所玷污。
3. About the experiment, these experiments were conducted in the free stream wind tunnel, and vitiated air heater was used to simulate the high altitude flow condition. 本文试验在自由射流风洞中进行，利用空气加热器模拟高空飞行条件。
英英解释
adj.
1. impaired by diminution
2. ruined in character or quality
