Behind this wall were stone quarries.

这座墙后面是采石场。

youdao

And they've buried this important bit behind a registration wall?

而如今，他们已将这重要的一点埋葬在了注册墙之后。

youdao

And they've buried this important bit behind a registration wall?

而如今，他们已将这重要的一点埋葬在了注册墙之后。

youdao