Actor Tom Cruise is shown in this undated publicity photograph from a scene of the new thriller film "Collateral" as he portrays Vincent, a contract killer who has been hired by a narco trafficking cartel to kill five people on one night in the city of Los Angeles. The film, directed by Michael Mann, also stars Jamie Foxx and Jada Pinkett Smith and opens in the United States August 6, 2004. (Reuters)

portray: to act（扮演）

contract killer: professional murderer（职业杀手）

trafficking: carrying on trade illegally（traffic 的现在分词形式，非法交易）