You can mark your books with light pencil marks to indicate words you'd like to practice.
你可以轻轻地用铅笔在书上做标记标出你计划练习的重点词汇。
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。
Using a ruler, mark a light line with your pencil down the left-hand edge, about 1-2cm in.
用尺子在左边画一条直线，离边缘1 - 2厘米。
Draw the main center lines and block in the general outline of the views with light, sharp 6h pencil lines.
用轻细的6H铅笔线绘制主要的中心线和视图大体的轮廓框。
For example, a yellow pencil looks yellow because its paint reflects the wavelength of yellow light, and absorbs the other wavelengths.
例如，黄色彩笔之所以看起来是黄色是因为该种颜料反射黄色光波，并且吸收其他波段的光。
Tool rail accessories include telephone stand, letter paper tray, pencil jar photo frame and name tag holder. Otheraccessories include task light and divider.
顶槽配件包括电话架、文件盘、笔筒、相架及名牌其他配件包括工作灯及分隔板。
To test which areas are in light and which are in shadow, you can cast a shadow with a pencil on the object.
注意中央光和高光的位置是不一样的。明暗交界线是物体从亮部转入暗部的区域。这个就是光线和表面相切。
To test which areas are in light and which are in shadow, you can cast a shadow with a pencil on the object.
注意中央光和高光的位置是不一样的。明暗交界线是物体从亮部转入暗部的区域。这个就是光线和表面相切。
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