| 1 | The biggest challenge of this case is the lack of substantial evidence. | |
| 2 | Catch not at the shadow and lose the substance. | |
| 3 | The project is surrounded by problems from all aspects, making it difficult to make substantial progress. | |
| 4 | Our talk has made substantial progress, and this is a good start. | |
| 5 | That job is just a formality for him and has no substantive effect. |
