contractor

详细解释:n. 立契约的人, 承包商
【化】 承包者; 承包工厂
【经】 包工者, 包造者, 承包人

英语解释：

名词 contractor:

someone (a person or firm) who contracts to build thingsthe bridge player in contract bridge who wins the bidding and can declare which suit is to be trumps同义词：declarer