Two, Natalia Boa Vista

Natalia: I'm late!
Eric: For what?!
Natalia: I'm late!
Eric: What we gonna do?
Natalia: [laughs]
Eric: WHAT?
Natalia: It's just nice. You said 'we'.
Eric: It takes two to tango.

- CSI: Miami, Skeletons (4.15)

나탈리아: 늦었어요!
에릭: 어디에요?
나탈리아: 늦었어요!
에릭: 우리가 무엇을 할건데요?
나탈리아: [웃는다]
에릭: 왜요?
나탈리아: 좋아서요. 당신이 '우리'라고 말했잖아요.
에릭: 탱고를 추기 위해서는 두 명이 필요하죠.

- CSI: 마이애미

Cooperation, Western Proverb

It takes two to tango.

- Western Proverb

A common idiomatic expression which suggests something in which more than one person or other entity are paired in an inextricably-related and active manner, occasionally with negative connotations.

The phrase originated in a song, Takes Two to Tango, which was written and composed in 1952 by Al Hoffman and Dick Manning. The lyrics and melody were popularized by singer Pearl Bailey's 1952 recording.

탱고 추는 데는 둘이 필요하다.

- 서양속담

두 손뼉이 마주쳐야 소리가 난다.

http://en.wikipedia.org/wiki/Takes_two_to_tango_(idiom)