| 1. | The mass m is assumed to be constant .
我们假设质量m是不变的。 |
| 2. | In steady flow, mass flux is constant .
在稳定流动中，质量通量是恒定不变的。 |
| 3. | I will stick to the last day of my life .
我是到死不变的。 |
| 4. | A quantity whose value remains unchanged is called a constant .
其值不变的量称为常量。 |
| 5. | Here again my old caution stood me in good stead .
这一次我那种向来不变的谨慎又给我许多好处。 |
| 6. | They have their stereotyped smile and their fashionable manner .
她们有自己那套固定不变的笑容和时新风度。 |
| 7. | The rate of foreign exchange, once established, was supposedly fixed .
这个汇率一旦制定就被认为是固定不变的。 |
| 8. | Given a constant theme, any amount of variation seemed to him possible .
有了不变的主题，他似乎可以变化多端。 |
| 9. | They free our minds from considering our world as fixed and immutable .
它们改变着人们将世界看作是永恒不变的观点。 |
| 10. | The ordered suppressed castes of centuries wither here .
几百年来传为定制、严守不变的一套等级制度一到这里都冰消瓦解了。 |
