1. The ship's renavigation was necessary due to the sudden change in weather.
由于天气突然变化，船只需要进行重新导航。
2. After encountering a major obstacle, the pilot had to rely on his renavigation skills to reach his destination.
遇到重大障碍后，飞行员必须依靠自己的重新导航技巧才能到达目的地。