Meaning of まるで in Japanese

Definition of まるで

まるで(marude) 【丸で】

(adv) quite; entirely; completely; at all
ぼくにはまるでその理由がわからない。
I have no idea why it is so.
as if; as though; just like

まるでかこむ(marudekakomu) 【円で囲む】

まるでなってない(marudenattenai) 【丸で成ってない】

I remember the event as clearly as if it had happened just yesterday.

I haven't seen anything of him for some time.

You two look exactly like brother and sister.

It seems like yesterday that we skated together.

What that politician said is not at all true.

That man bows to me as if he knew me.

あのいとこは見かけみかけは似ているが性格せいかくはまるで違うちがう。

The cousins are similar in appearance but widely different in character.

あなたはまるで幽霊ゆうれいでも見たようなよう顔つきかおつきをしているする。

You look as if you had seen a ghost.

Why do you talk about him as if he were an old man?

I don't think they've fully adapted to the working world yet. They still seem like students.