central casting
noun
- chiefly N. Amer. an agency or department that supplies actors for minor, usually stereotypical or generic film roles〈主北美〉演员（或角色）选派部（为电影中的小角色, 通常是老套或某类型的小角色, 选派演员的机构或部门）：
Lynch is a mild, methodical guy, a bureaucrat from central casting.
林奇是个性情温和、办事有条不紊的小伙, 由演员选派部选送, 扮演一个官僚的角色。
词源
1920s: from the name of the US organization Central Casting Corporation.