If you own the book follow up with a pencil. You may want to use a very light pencil mark to underline certain words that you want to remember.

如果你使用一根铅笔读书，你可能想要用铅笔来轻轻标记某些词语来强调你想要记忆的词汇。

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Students mark the main ideas and important details with a pen or pencil, yellow or blue or orange.

学生们用黄色、蓝色或橙色的钢笔或铅笔标出主要思想和重要细节。

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Turn the paper pattern over, then cut one more of each piece from the same leg. Mark with pencil or tailor's chalk as before.

将纸模板翻转过来，从同一条裤腿上再每部分剪一份，同样用铅笔或划粉标记好。

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Then an electrical technician, Cassagnes came upon the Etch A Sketch idea in the late 1950s when he peeled a translucent decal from a light switch plate and found pencil mark images transferred to the opposite face, the Toy Industry Association said.

NPR: Inventor Of Etch A Sketch Dies In France At 86

Mr. Cassagnes, an electrical technician, came upon the Etch A Sketch idea in the late 1950s when he peeled a translucent decal from a light switchplate and found pencil-mark images transferred to the opposite face, the Toy Industry Association said.

WSJ: Etch A Sketch Inventor Dies at 86