1·Are the red lines parallel?
这些红色线是否为平行线？
2·Parallel lines will never meet no matter how far extended.
相平行的线不管延伸多长，永远都不会相交。
—— 《柯林斯英汉双解大词典》
3·Whereas in mammals the tiny tubes that convey nutrients to bone cells are arrayed in parallel lines, in birds the tubes form a random pattern.
哺乳动物将营养物质输送到骨细胞的微小管道是平行排列的，而鸟类的管道则是随机排列的。
4·The parallel lines appear to diverge.
这些平行线像是岔开了。
—— 《牛津词典》
5·Another sign of ice is the presence of parallel lines and pitted material on the crater floor.
另外一个有冰存在的迹象就是陨石坑底部的并行线和无核物质。
6·MacKay first observed this effect on the wallboard of a BBC studio: the broadcasting staff had been annoyed by illusory shadows running up and down blank strips between columns of parallel lines.
麦凯是在BBC的一个录音室里第一次看到这个效果的：那位正在播音的职员被平行线柱上线条空白间上下跳动的阴影错觉搞得很不耐烦。
7·Transmission lines stretch parallel to the road and make it impossible to get lost.
输电线路平行着马路延伸，跟着输电线路走不会迷路。
8·Only in a flat universe does space obey all the standard geometry-class rules-the angles of a triangle add up to exactly 180 degrees and parallel lines never meet.
只有在平坦的宇宙中，空间才符合标准的几何规律——三角形的内角和精确地等于180度，平行线永远不相交。
9·An affine transformation is one in which parallel lines remain parallel after the transformation.
仿射转换指的是平行线在转换后还保持平行。
10·Some of this parallelization of development was made possible through the use of source code management tools because of the ability to keep parallel lines of development synchronized.
由于使用源代码管理工具可以保持开发的同步并行进行，这样就可能实现开发的部分并行化。