| 1 | The strongest man does not necessarily live the longest. | |
| 2 | My opinion is only a personal opinion and may not be correct. | |
| 3 | No matter how it is arranged, it may not be able to solve this problem perfectly. | |
| 4 | University education may not guarantee that students have enough vocational skills. | |
| 5 | Working all day without rest may not shorten his road to success. |