他不想听我的建议，所以我想他只能通过艰难的方式吸取教训。

He doesn’t want to take my advice, so I guess he’ll have to ___learn ___the ___hard ___way.

如果你不从历史中学习，你将不得不通过艰难的方式吸取教训。

If you don't learn from history, you'll have to ___learn its lessons ___the ___hard ___way.

她在陷入债务后，以艰难的方式学会了如何预算资金。

She ___learned to budget money ___the ___hard ___way after running into debt.