一搭一檔

Explanation: That complement each other, collaborate with each other. Sometimes with derogatory implications. 　　Examples: Zhou Libo, "summer nights": "Take two friends, one a file that a lot of sarcastic words of the song is actually dig the song and bred for sad people." Jiang Zilong "Read Me a female engineer ":" They both are so echoed each other on any occasion, a ride of a file, act in harmony. "