He learned this lesson the hard way – from his own personal experience.

他惨痛地得到了这一教训–从他自己的亲身经历中得来的。

《柯林斯英汉双解大词典》

She won't listen to my advice so she'll just have to learn the hard way.

她不肯听我的忠告，所以只好吃了苦头才知道厉害。

《牛津词典》

Everything he achieved in life was earned the hard way and his success in the literary field was no exception.

他在生活中所取得的一切都是来之不易的，其在文学领域的成功也不例外。

youdao

Many Americans learned this the hard way by investing all their money in stock shares, which then lost value.

VOA: special.2011.03.27

PROFESSOR BAWENDI: The only But it's hard to imagine an irreversible compression the way we can just imagine an irreversible expansion.

,但是我们很难,像描述不可逆膨胀一样,来描述不可逆压缩。

麻省理工公开课 - 热力学与动力学课程节选

So on your computer's hard drive are again, a whole bunch of tiny magnetic particles aligned this way or this way.

因此，你的电脑硬盘是完全是,有一簇按照这种方式排列的磁性粒子。

哈佛公开课 - 计算机科学课程节选

The university president, like many before him on other campuses, found out the hard way.

CNN: Rutgers president needs reality check

Many businesses are learning this the hard way and paying a hefty price in the process.

FORBES: Perfect Power: Clean Energy's Killer App

Wal-Mart has learned the hard way that a first-mover advantage can be important in international retailing.

WSJ: Wal-Mart Bids $4.6 Billion for South Africa's Massmart