YOU SAID:

The walls are made of concrete, and you have nothing that could get through them.

INTO JAPANESE

壁はコンクリートでできていて、そこを通り抜けるものは何もありません。

BACK INTO ENGLISH

The walls are made of concrete and nothing can pass through them.

INTO JAPANESE

壁はコンクリートでできており、何も通過することはできません。

BACK INTO ENGLISH

The walls are made of concrete and nothing can pass through them.