1.
One of a set of parallel geometric figures, such as lines or planes.
平行线，平行面如直线或平面等一组平行的几何图形之一
2.
Arrangement or position in a straight line or in parallel lines.
直线排列直线或平行线的排列或位置
3.
One of the five parallel marks constituting a staff.
谱线五线谱上五条平行线中的一条
4.
He assumed parallelness, in constancy, right to the end of things;
他假定平行线一直到头都是平行的。
5.
He drew a series of parallel lines.
他画了一组平行线。
6.
Parallel lines indicates a break in continuity.
平行线表示连续的中断。
7.
Autoparallels in the Riemann-Cartan Space
Riemann-Cartan空间中的自平行线
8.
shaded by means of fine parallel or crossed lines.
用纤细的平行线或者交叉线画出阴影。
9.
draw(a line) using a ruler,etc;mark parallel lines on(writing-paper,etc)
用尺等画（线）;在（书写纸等）上画平行线
10.
A family of parallel lines cut the conic.
有一组平行线与圆锥曲线相交。
11.
Consider a family of parallel lines that cut the conic.
设有一组平行线与圆锥曲线相交。
12.
Road Plane Curve Parallel Arc Length General Formula and Its Application
道路平曲线平行线弧长通用公式及应用
13.
parallel lines never converge; concentric circles are parallel; dancers in two parallel rows.
平行线从不相交；同心圆是平行的；平行的两排舞蹈者。
14.
Singularities of Parallels for Hyperbolic Plane Curves
双曲平面曲线的平行曲线的奇点分类
15.
length of the parallel portion of the designed waterline
设计水线平行部分长度
16.
The railway line runs parallel with / to the highway.
铁路线和那条公路平行。
17.
parallel attack= parallel method=parallel fire suppression
平行建立火灾控制线
18.
Let the two lines be parallel.
假设这两条线平行。