First let me back up a bit and talk about vision correction before the printing press.

让我先回顾下在印刷术之前的视力矫正是什么样的。

youdao

Last year, they finally let me back in.

去年，他们终于重新接受了我。

youdao

I've locked myself out of my room. Can someone come and let me back in?

我把自己锁在外面了，能有人来帮我开一下门吗？

youdao

I've locked myself out of my room. Can someone come and let me back in?

我把自己锁在外面了，能有人来帮我开一下门吗？

youdao