preemptKK [ˋpriˏɛmpt] /ˈpɹiˌɛmpt/發音動詞1先發制人、搶先阻止、防患未然The company cut prices to preempt a rival's new product launch.公司降價，先發制人阻擋對手新產品上市。2搶先取得、先占、搶先一步He preempted the best seats by arriving an hour early.他提早一小時到，搶先占了最好的位子。3取代、凌駕於Federal law preempts any conflicting state regulation here.在這方面，聯邦法律的效力凌駕於相牴觸的州法規之上。4插播取代、中斷播出美式，指節目The network preempted the drama for a live news conference.電視台臨時取消該檔連續劇，改播記者會實況。