lesson例句
He learned this
lesson the hard way from his own personal experience.
吃一堑长一智，他这个教训来之不易——是从他自己的亲身经历中得来的。
The
lesson from all of this is perhaps a broader one.
从所有这一切中得出的教训可能具有更广泛的意义。
It was the quickest swimming
lesson I'd ever witnessed.
这是我所见过的最速成的游泳课。