平行直角尺 parallelsquare ; parallel square
两直线平行内错角相等 DCB
平行直角定规 Precision flat try square
行与水平页角度 LONG lfEscapement
但是，五角大楼发言人惠特曼星期一表示，战略审议工作和增兵部署决定正在“平行”进行，要“过一段时间”才能知道哪一个工作能先完成。
But another Pentagon spokesman, Bryan Whitman, said Monday the strategy review and the troops deployment decision are being conducted in "parallel" and that "time will tell" which is completed first.
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。
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.
每个三角形的面积等于拼成的平行四边形面积的。
The area of every triangle equals the area of the parallelogram.
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