preclude

1. V-T If something precludes an event or action, it prevents the event or action from happening. 阻止 (某事件或行动发生)[正式]

At 84, John feels his age precludes too much travel. 在84岁时，约翰感觉到他的年龄不允许他作太多的旅行。

2. V-T If something precludes you from doing something or going somewhere, it prevents you from doing it or going there. 阻止 (某人做某事或去某地)[正式]

A constitutional amendment precludes any president from serving more than two terms. 宪法的一项修订条款规定任何总统不得连任两届以上。