trial-and-error

常见例句

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。
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。
He learned technical skills by trial and error.
他通过不断摸索掌握技能。
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。