“独木难成林，三树聚成山。”【英】

“A single tree cannot grow into a forest; while many trees will create a mountain.”

译文来源

http://www.fmprc.gov.cn/mfa_eng/wjdt_665385/zyjh_665391/t1329606.shtml

例句

1. 越南有句俗语：“独木难成林，三树聚成山。”——《携手开创中越关系的美好明天——习近平在越南媒体发表署名文章》

1. And there is a similar Vietnamese saying: “A single tree cannot grow into a forest, while many trees will create a mountain.”—Quoted from Join Hands to Deliver a Bright Future for China-Vietnam Relations