Much as parents wish otherwise, trial, error, and recovery mark the adolescent learning curve of growing up.

与父母所想的很不一样，其实磨难，错误，和复原才标志着青少年正在成长过程进行曲折的学习。

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Learning the business of music can be trial and error without the right guidance, and lead to you wasting a lot of time and money.

如果没有正确的引导，学习音乐行业的知识要经过无数次的尝试和失败，既浪费了时间又浪费了金钱。

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In fact, in this relationship, the robot does all the work, learning by trial and error, taking all the risks and adapting to my moods and whims.

事实上，在两人的关系当中，机器人包下了所有的事情，他反复学习来迎合我的情绪和冲动。

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The ultimate goal was always to exploit the opportunity to pour cash into successful innovations before the competition, but these companies recognized that trial-and-error learning usually uncovers opportunities faster than master plans.

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