Yap.Town

を見ればわかる

you can tell by looking at

→ を
phrase Rare #30,450
you can tell by looking at The subject and what you can tell are usually understood from context.
JA: 顔を見ればわかるよ。
EN: You can tell just by looking at their face.

その人の人柄は友を見ればわかる。

You can tell what a person is like by the friends they keep.

親父さんを見ればわかる

You can tell just by looking at your dad.

— きっと、うまくいく (2009)

人の死に方は、その人の生き方を見ればわかる。

You can tell how a person will die by the way they live.

木は果実を見ればわかる。

A tree is known by its fruit.