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The line is a natural extension of the point, and is characterized by both length and direction.
该生产线是该点的自然延伸,是由长度和方向的特点。
youdao
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The line is a natural extension of the point, and is characterized by both length and direction.
该生产线是该点的自然延伸,是由长度和方向的特点。
youdao