诫

例句：

1. 1. Please be careful when crossing the street.
   过马路时请小心。
2. 2. The teacher gave a stern warning to the students.
   老师对学生发出了严厉的警告。
3. 3. He warned me not to go alone in the dark.
   他警告我不要在黑暗中独自行动。