你撒谎是为了让儿子感觉好一些，但却错过了一个给他上一堂人生课的好机会。

You lied to make your son feel better, but you missed a good chance to teach him a life lesson.

youdao

当记者问他会不会因为去武汉导致缺很多课而伤心，他说缺的课可以以后再学，但如果祖母错过了最好的治疗时间，就没有机会挽回了。

When the reporter asked him if he felt sorry to miss so many lessons because of going to Wuhan, he said the lessons he missed could be learned later, but if his grandmother missed the best time to cure, there would be nothing to get the chance back.

youdao

对于眼前这棵树，我也有同感。这棵树此时的华美只能维持一个礼拜，多以它对于我们相当珍贵。课我竟差一点错过了。

I felt the same way about the tree. Because its majesty will last only a week, it should be specially precious to us. And I had almost missed it.

youdao

So, if you by chance, I know it's very rare, but if by chance you don't get the class you can always follow up later.

如果你们偶然，我知道不太可能，但是如果不小心你们错过了某节课,你们就可以在之后补回来了。

麻省理工公开课 - 固态化学导论课程节选

So sometimes, if you miss a class, you can just kind of check in earlier years, like lectures,

所以有时候，如果你错过了一节课，你可以看看前几年的讲座，

开放式的课程？ - SpeakingMax英语口语达人