New Words：

mark [mɑːrk]
n.记号, 痕迹, 分数, 污渍, 斑点
v.弄污,打分, 留意, 做标记, 留下痕迹

Sample Sentences：

Prices are marked on the goods.
I marked that down in my notebook.
The box of eggs was marked "With Care".
The teacher marked the examination papers.

I got full marks in the spelling test.
The wet glass left a mark on the surface of the table.
The children left dirty marks all over the kitchen floor.
You'd better make a mark where you have any questions.

surface [ˈsɜːrfɪs] n. 表面；地面；表层；水面

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