1. A man was seen prowling around outside the factory just before the fire started. 就在起火之前，有人看到一个男子在工厂外踱来踱去。
2. He obeyed, and was promptly arrested as a suspicious character prowling within the precincts of the palace. 他照做了，但很快就被抓了起来，因为那军官认为他是个可疑人物，在宫里的各个角落里鬼鬼祟祟。
3. If something goes wrong—a hungry lizard prowling around for an ant snack, for instance—then a rush of ants returning without food sends waiting reserves a "Don't go out" signal. 如果出了什么问题——比如，一只饥饿的蜥蜴在四处寻找蚂蚁作为零食——那么一群没有食物的蚂蚁就会匆匆归来，给等待的蚂蚁发出“不要出去”的信号。
