1·Perhaps the most important lesson to be learned is that you simply cannot please everyone.
或许应吸取的最重要的教训是你不可能取悦每一个人。
—— 《柯林斯英汉双解大词典》
2·In the 30 years since Open University was established, an important lesson has been learned by people.
在开放式大学成立后的30年里，人们得到了一条重要的经验。
3·The teacher, Mrs Green, decided to teach us a very important lesson.
格林老师决定给我们上一堂非常重要的课。
4·Her children have learned an important lesson witnessing their mother earn her degree.
她的孩子们在见证母亲获得学位的过程中也学到了重要的一课。
5·The story of the Apple Newton can teach us an important lesson about failure.
苹果牛顿的故事告诉我们一个与失败有关的重要道理。
6·The most important lesson is that failure and success are two sides of the same coin.
最重要的道理是，失败和成功是同一枚硬币的两面。
7·It's an important lesson for her.
这对她来说是很重要的一课。
8·Here I learned my first important lesson: disabled as I was in language, I could still be smart and well express myself with clay.
在这里，我学到了我的第一课：虽然我不擅长语言，但我仍然可以很聪明，用粘土很好地表达自己。
9·This is an important lesson.
这是很重要的一课。
10·I think that was an important lesson.
我认为那是很重要的一课。