a light line that is used in lettering to help align the letters
a detailed plan or explanation to guide you in setting standards or determining a course of action
同义词：road map
a rule or principle that provides guidance to appropriate behavior
同义词：guidepost, rule of thumb
guideline例句
One of the reforms allows the local education department to choose their own textbooks based upon the national teaching guideline.
其中之一就是允许地方教委在国家教学大纲的指导下选择合适自身的教材。
guideline详细解释
guide.line
n.（名词） A statement or other indication of policy or procedure by which to determine a course of action: 指导路线，方针：对政策或路线的陈述或其它指示，用以决定行动的步骤： 例句： guidelines for the completion of tax returns. 指导完成退税的方针
