有益补充【英】

a useful complement to

译文来源

http://news.xinhuanet.com/english/2017-04/03/c_136180174.htm

例句

1. 次区域合作是中欧关系有益补充，相信中国同北欧的密切联系将为促进欧洲繁荣和中欧关系发展作出贡献。--《习近平在芬兰媒体发表署名文章》

1. Sub-regional cooperation is a useful complement to China-Europe relations. I am sure that the close ties between China and Nordic countries will be a contributing factor to European prosperity and China-Europe relations.--Quoted from Chinese President Xi Jinping published a signed article in the Finnish media