environment意為環境,周圍狀況,自然環境一個生物體或一群生物體周圍的整體狀況,尤其指作用和影響這群生物體的生長,發展和生存的外界物質條件的總和.
The twins were separated at birth and brought up in entirely different environment.

surrounding常用復數形式,指環境,周圍的事物,詞義較狹窄,僅指周圍的具體的物質性的東西.
The students live happily in beautiful surroundings.