YOU SAID:

I don't understand why giraffes are so tall

INTO JAPANESE

キリンは背が高いので理由を理解していません。

BACK INTO ENGLISH

Giraffes are so tall that does not understand the reason.

INTO JAPANESE

キリンは背が高いので、理由を理解していません。

BACK INTO ENGLISH

Giraffes are so tall that, no idea why.

INTO JAPANESE

キリンは背が高いので、わからない理由。

BACK INTO ENGLISH

Giraffes are tall, so not sure why.

INTO JAPANESE

キリンは背が高いのでわからない理由。

BACK INTO ENGLISH

Giraffes are so tall that do not know why.

INTO JAPANESE

キリンは背が高いのでなぜかわからないが。

BACK INTO ENGLISH

The giraffes are so tall that do not know why.

INTO JAPANESE

キリンは背が高いのでなぜかわからないが。

BACK INTO ENGLISH

The giraffes are so tall that do not know why.