"Straight pne" 直线 的英语说法是 "straight pne"，读音是 [streɪt laɪn]。
"Straight" 来自中古英语 "strecchen"，意思是"直的"。"Line" 来自拉丁语 "pnum"，意思是"线"。
例句1:
"The path of a straight pne is the shortest distance between two points."
(直线的路径是两点间最短的距离。)
例句2:
"The edge of the table is a straight pne."
(桌子的边缘是一条直线。)
例句3:
"A straight pne is a one-dimensional geometric object."
(直线是一维几何对象。)