直系的英文：
【法】 direct line
- He is descended lineally from an immigrant.
他是一位移民的直系後裔。 - He is directly descended from royalty.
他是皇室的直系后裔。 - Who were the immediate forebears of Jack?
谁是杰克的直系祖先？ - A lineal ascendant [descendant]
直系尊属[后裔] - She descends in a direct line from the country's first President.
她是这个国家的首任总统的直系后裔。
adj. 直接的；直的；恰好的；率直的；直系的；亲身的
v. 把…对准；管理；指导；导演；指挥；指向；引路
adv. 径直地，直接地
- This is a direct election.
这是直接选举。 - Cross direction: The direction at right angle to the paper grain or machine direction.
横向:与纸纹成直角的方向。 - It saved me hours of work in the direction of notes and directives.
这为我节省纪录和指挥的时间。 - This is the most direct road.
这是最直的一条路。 - She has a direct way of speaking.
她说话直爽。
n. 线条，界线，路线；条纹；排；铁路线；生产线；台词；态度；防线；前线
v. 用线标出，划线于；使布满纹络；加衬里于；排队，排列成行
- This is a lined trunk.
这是一个有衬里的箱子。 - They are politically in line.
他们在政治上意见一致。 - On a map there are horizontal lines and vertical lines.
在地图上有水平的线和垂直的线。 - To inscribe(a line or lines)with a pencil or other marking implement.
画用铅笔或其它做标记的器具刻线 - The new proposal is in line with our general line.
新建议和我们总的原则是一致的。