We are going to start with something called "turtle" graphics. Oddly enough, our turtle will look like a penguin.
我们将以某些东西开始称为“海龟”图形。说也奇怪，我们的海龟看起来像一只企鹅。
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In computer graphics, a method of creating images by sending instructions to a "turtle", represented by the screen cursor, to change direction, move specified distances or move to specified points.