The firm is looking for another source of revenue.商行正在寻找其他收入渠道。Tourism is the island's main source of revenue.旅游业是该岛的主要收入来源。Tobacco duty is a major source of revenue for the government.烟草税是政府收入的一个重要来源。The disposal of the unlocated lands will be a valuable source of revenue.出售那些未勘定的土地将是宝贵的税收来源。