verb · to advise, urge, or warn someone about their behavior

老师规劝学生要珍惜时间。

noun · a tool used for drawing circles or measuring distances

圆规是数学课必备的工具。

verb · to plan, design, or map out a project or scheme

政府正在进行城市规划。

noun · a regulation, law, or established custom

我们必须严格遵守校规。