| 释义 |
 | 直线 | | zhíxiàn | 名形 | | | I 名 straight line: | | | 直线距离二十里 twenty li as the crow flies | | | 两点之间以直线为最短。 A straight line is the shortest distance between two points. |
| 1 direct; rectilinear: | | | 直线飞行 rectilinear (or straight) flight | | | 直线爬高 rectilinear (or straight) climb |
| 2 steep; sharp (rise or fall): | | | 捕鱼量直线上升。 The total catch of fish has shot up. | | | 废品率直线下降。 The rate of rejects fell sharply. | | | 【物】直线运动 rectilinear motion | | | 直线加速器 linear accelerator |
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