名詞 trial-and-error:

1. experimenting until a solution is found
   同義詞：trial and error

形容詞 trial-and-error:

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

1. The only way Jim could solve the algebra problem was by the method of trial and error.
   要解決這道代數(shù)題，吉姆唯一能做的就是不怕失敗，反復(fù)嘗試。
2. I lost the instruction book and so I had to find out how to use the machine by trial and error.
   我把說明書丟失了，結(jié)果只得通過不斷摸索才弄懂怎樣使用這部機(jī)器。
3. He learned technical skills by trial and error.
   他通過不斷摸索掌握技能。
4. I finally found the right key after lots of trial and error.
   經(jīng)過反復(fù)試驗(yàn)，我終于找到了正確的方法。