必须采取措施保持生态平衡 英文翻译用开头是Something的句子来做..

Something must be done to keep the ecological balance .

Something must be done to keep the balance of the eco-system.

something must be done to protect the ecology system.

Something must be done to protect ecological balance （生态平衡 ）
由于是“一些措施”做主语，所以采用被动句。

Something must be done to keep the balance of the eclology.