1. The chef perfected her recipe through trial and error before finally getting it right.
烹饪师通过反复试验最终完善了她的食谱。

2. It took many rounds of trial and error for the scientist to find the right formula for the experiment.
科学家经过多次试验才找到了实验的正确配方。

3. The student solved the difficult math problem through trial and error, trying different approaches until she found the solution.
学生通过反复试验解决了困难的数学问题，尝试不同方法直到找到解决方案。

4. The company used a strategy of trial and error to determine the most effective marketing techniques.
公司采用试错策略来确定最有效的营销技术。

5. The inventor spent years conducting trial and error experiments to create the perfect prototype.
发明家花了多年时间进行试验来创造完美的原型。

6. The team encountered many setbacks during the project, but they persevered through trial and error until they achieved success.
团队在项目中遇到了许多挫折，但他们通过反复试验坚持到取得成功。