Jacob used a ruler to draw straight lines.

雅各习惯用一把直尺划直线。

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It has always been easier for computers to draw straight lines and more difficult to draw curves.

对计算机而言，画直线总是会更容易，而画曲线总是会更困难。

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Simple drawings might be straight lines, but you are free (just as a real artist is) to draw curves and arcs.

简单的图形可能由直线组成，但是与现实的画家一样，也可以绘制曲线和弧线。

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Now there many ways I can connect these two points together. The simplest way is to draw a straight line. It's called the linear interpolation. My line is not so straight, right here. You could do a different kind of line.

最简单的办法是,像这样画一条直线,这叫线性插值,不过我的这条线画得不太直，你也可以用别的办法,比如一条抛物线。

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To create a faux molding, a straight edge and pencil are used to draw a line, then shading is added with paint to give the look of a curve.

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