The two organizations 'paired up' to educate the public about the threat of global warming.
I can't do everything at once—I've only got 'one pair of hands'. [=I am only one person]
To avoid competition, breeding/mating 'pairs' stay away from other male chimpanzees.
(..) Let me tell you what now. I'm going to call a couple of hard pipe-hitting niggers... to go to work on the homes here... with a pair of pliers and a blow torch. You hear me talking, hillbilly boy? MARSELLUS: I ain't through with you by a damn sight. (..)1994 Pulp Fiction