As we all known, there were many restraints in the past, like conservatism, limited knowledge and so forth.

正如本人们所晓得的那样，有许多的限制在过去，喜欢激进主义，有限的学问等等。

youdao

As we all known, there were many restraints in the past, like conservatism, limited knowledge and so forth.

正如本人们所晓得的那样，有许多的限制在过去，喜欢激进主义，有限的学问等等。

youdao