1. Crack is a highly potent and addictive derivative of cocaine. 强效纯可卡因是一种药效极强、容易使人上瘾的可卡因制剂。
2. This is one of the most potent ways, Tice found, to put anger to rest. Tice 发现，这是平息愤怒最有效的方法之一。
3. The third, and most potent limitation is that it is not possible to be certain that the infant's response was due to the stimulus presented or to a change from no stimulus to a stimulus. 第三也是最有力的限制在于婴儿做出的是面对刺激的反应，还是从受到刺激到没受到刺激的变化，这是无法确认的。
4. Laboratory tests show that secretions from the bodies of these millipedes are rich in two chemicals that are potent mosquito repellents, and mosquitoes carry parasites that debilitate capuchins. 实验室测试表明，这些千足虫体内的分泌物富含两种化学物质，这两种物质是有效的驱蚊剂，而蚊子携带的寄生虫会削弱卷尾猴的能力。
5. Their most potent weapon was the Exocet missile. 他们效力最强的武器是飞鱼导弹。
