| 1. | Not a single one of these conditions can be dispensed with .
这些条件缺一不可。 |
| 2. | None of these three can be excluded .
这三者缺一不可。 |
| 3. | And those four abilities are complementing each other
这四者相辅相成，缺一不可。 |
| 4. | If you miss either step , you are hosed
两步缺一不可，否则你就会有麻烦。 |
| 5. | This six factors are equally important , and are integral
这六因素都很重要，缺一不可。 |
| 6. | It takes a lot of practice in listening , speaking , reading and writing
多听多讲多看多写,缺一不可。 |
| 7. | My being is the sum of my parts , and i am nothing without one
我的生命是所有这些部分的结合，缺一不可。 |
| 8. | All four phases must be implemented during the management of the project
项目管理过程中这四个步骤缺一不可。 |
| 9. | For a successful writing activity to happen , both are necessary
对于一个成功的写作行为来说，这两点缺一不可。 |
| 10. | These three are essential parts of equilibrium in natural environment
三者都是自然生态平衡的有机组成部分，缺一不可。 |
