trial and error

名词 trial and error:

1. experimenting until a solution is found

形容词 trial and error:

1. trying out various means or theories until error is satisfactorily reduced or eliminated
   同义词：trial-and-error
2. relating to solving problems by experience rather than theory
   同义词：trial-and-error

1. The only way Jim could solve the algebra problem was by the method of trial and error.
   要解决这道代数题，吉姆唯一能做的就是不怕失败，反复尝试。
2. I lost the instruction book and so I had to find out how to use the machine by trial and error.
   我把说明书丢失了，结果只得通过不断摸索才弄懂怎样使用这部机器。
3. He learned technical skills by trial and error.
   他通过不断摸索掌握技能。
4. I finally found the right key after lots of trial and error.
   经过反复试验，我终于找到了正确的方法。