play a part in

在…起作用，参与

platelet, platform, plating, platinum, platinum blonde, platitude, platitudinous, platonic, platoon, platter, platypus, plaudit, plausibility, plausible, plausibly, play, play (sb) up, play (sth) off, play a joke on sb., play a part, play along (with sb/sth), play at sth/being sth, play into sb.'s hands, play on, play out, play sb in, out, etc, play sth back (to sb), play sth down, play sth out, play the devil with, play up to, play with, play with oneself, play with player, play with sb/sth, play-act, play-acting, play-back, play-by-play, play-off,