✔ 最佳答案
「家居環保」英文是 household environmentalism.
一個有關 2006年英國財政預算案 (The United Kingdom Government's Budget Report) 的概要便提到 household environmentalism 一詞 --- Household environmentalism:The Budget includes a package of small scale measures aiming to make homes greener, including a pledge that 250,000 homes will have subsidised insulation installations, .... (
http://www.mayerbrownrowe.com/london/publications/article.asp?id=2654nid=369).
這裡的 ‘家居’ 一詞不應用 ‘domestic’, 因為這字亦解 ‘國內的’、‘本國的’ 或 ‘本土的’, 與 ‘家庭的’ 或 ‘家居的’ 不同, 容易令人混淆;household 一字才正確。