他不听我的建议，所以不得不通过艰难的方式学会负责任。

He didn't take my advice, so he had to ___learn responsibility ___the ___hard ___way.

我们不得不通过反复试错，以艰难的方式学会这些教训。

We had to ___learn these lessons ___the ___hard ___way, through trial and error.

在她的职业生涯中，她以艰难的方式学会了耐心的重要性。

She ___learned the importance of patience ___the ___hard ___way during her career.