1. The situation became even thornier when new evidence was presented in court.
这种情况变得更加棘手，当法庭上提出了新的证据。

2. Dealing with difficult customers can be a thornier task than expected.
处理困难顾客可能比预期的更加麻烦。

3. The negotiations between the two countries grew thornier as neither side was willing to compromise.
两国之间的谈判变得更加棘手，因为双方都不愿意妥协。

4. As the project progressed, we encountered thornier issues that required careful consideration.
随着项目的进展，我们遇到了需要仔细考虑的更加棘手的问题。

5. The relationship between the two colleagues became thornier after a disagreement over a project.
在一次关于项目的分歧之后，两位同事之间的关系变得更加复杂。

6. Finding a solution to the thornier aspects of the problem will require creative thinking.
解决问题中更加棘手的方面将需要创造性的思维。