parallel straight lines造句
例句与造句
- Parallel straight lines are straight lines which , being in the same plane and being produced indefinitely in both directions , do not meet one another in either direction
平行直线是在同一平面内的直线，向两个方向无限延长，在不论哪个方向它们都不相交。 - It's difficult to find parallel straight lines in a sentence. 用parallel straight lines造句挺难的