我反复试验
I conduct repeated experiments.
以上为机器翻译结果，长、整句建议使用 人工翻译 。
经过反复试验，我终于找到了正确的方法。
I finally found the right key after lots of trial and error.
youdao
Finally I found out the right way over repeated trials.
了解她之后，我开始追求她并且用反复试验的做法试着赢得她的芳心。
After getting to know her, I start wooing her as well as learning to win her heart by trial and error.
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