to roll up, (fig.) to sweep up; to engulf; to drag into (a situation), (slang) to compete to an unhealthy degree; hypercompetitive, a roll, classifier for small rolled-up things (wad of paper money, movie reel etc)
to enter; to go into, to join; to become a member of, (bound form) to conform to (as in 入時|入时[ru4 shi2]), abbr. for 入聲|入声[ru4 sheng1], (on product packaging, after {number n} + {classifier}) containing (n pieces) (from Japanese 入 "iri")