A vector drawing is like a pencil drawing where you take a pencil from one point to another and connect the points with straight lines, curved lines, rectangles, and ellipses.
矢量作图更像是用铅笔画画，先拿铅笔确定一些点，然后用直线、曲线、方框和椭圆框连接这些点。
They are held together, poised upright like a pencil standing on its point, by the recursive dynamics of coevolution.
蝴蝶和马利筋，犹如立足笔尖的铅笔，依靠共同进化的递归动态而立得笔直。
I have a beautiful pencil case, the inside of the study are colorful, there is a blue rubber, three white pen, a black ball point pen, have a pink ruler and two green pencil, I like them very much!
我有一个非常漂亮的铅笔盒，里面的学具都是五颜六色的，里面有蓝色的橡皮，三支白色的钢笔，一只黑色的圆珠笔，有一把粉红色的尺子和两只绿色的铅笔，我非常喜欢它们！
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