YOU SAID:

I infer from your expression that you are not happy.

INTO JAPANESE

あなたの表情から、あなたは幸せではないと推測します。

BACK INTO ENGLISH

From your expression, I'm guessing you're not happy.

INTO JAPANESE

あなたの表情から察するに、満足していないと思います。

BACK INTO ENGLISH

Judging by your expression, I don't think you're satisfied.

INTO JAPANESE

あなたの表情から判断すると、満足しているとは思えません。

BACK INTO ENGLISH

Judging by your expression, I don't think you're satisfied.