beware of fume

例句：

1. 1.We should beware of the dangers that lurk in the dark.
   我们应该警惕黑暗中潜藏的危险。
2. 2.The smoke from the factory was so thick that we couldn't see more than a few feet ahead.
   工厂的烟雾太浓了，我们只能看到几英尺远。
3. 3. The doctor warned us to beware of any sudden changes in our health.
   医生警告我们要警惕任何突然的健康变化。