contributions贡献contributionn.贡献；捐款(赠)；投稿contributions to relief fund赠给救济基金的捐款contribution margin approach[经] 贡献毛益法Contribution Adoption System用稿制度contribution of source rocks源岩贡献contribution of factor owner要素所有者的贡献contribution by the Yunnanese云南人民的贡献Contributions are optional.捐献完全是随意的。contribution rate to variance方差贡献率contribution management system稿件管理系统contribution to the investment出资