| 1. | Don't go in a straight line anywhere .
不要大模大样走到任何地方。 |
| 2. | Radio waves travel in straight lines .
无线电波是直线传播的。 |
| 3. | In a uniform medium light travels in straight lines .
在均匀介质中光沿直线传播。 |
| 4. | Television signals can only be beamed in straight lines .
电视讯号只能以直线发射。 |
| 5. | The girls carried themselves tall and walked a straight line .
这两个姑娘却英姿飒爽，一往直前。 |
| 6. | Early in life we learn that light travels in straight lines .
早先在生活中我们就知道光是直线传播的。 |
| 7. | An undisturbed object continues to move uniformly in a straight line .
未受干扰的物体继续沿直线匀速前进。 |
| 8. | Where euclid unconsciously assumed the infinitude of straight lines .
欧几里德不自觉地假定了直线的无限性。 |
| 9. | In a vacuum, gamma rays travel in straight lines with the speed of light .
真空中，射线以光速沿直线前进。 |
| 10. | R is the slope of the straight line and b its ordinate at the origin .
R是直线的斜率，B是直线在纵坐标上的截距。 |
