"Column" refers to the vertical poles with signs on both sides of the road, which are often used to indicate the direction or related restrictions. The bottom of the pole is equipped with a wooden pole with a pointed iron foot. Measuring instruments; Mainly used to indicate the measuring point. Metaphor is an example of learning.

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2, experience the joy of life's struggle process, cross a higher benchmark, and your life is beautiful and valuable.

He is a three-good student in the city and a benchmark in our class.

4, a person should set a benchmark in the depths of his soul, so as to gather the unique things in his personality around him and show his unique characteristics.