YOU SAID:

Gotta build that wall!

INTO JAPANESE

その壁を造らなきゃ！

BACK INTO ENGLISH

I have to make the wall!

INTO JAPANESE

壁を作る必要があります。

BACK INTO ENGLISH

You need to make a wall.

INTO JAPANESE

壁を作る必要があります。

BACK INTO ENGLISH

You need to make a wall.