center的形容詞

　　I am thinking of installing central heating.

　　我在考慮安裝中央供暖系統。

　　The house is built around a central courtyard.

　　這房子是圍繞著中央的庭院而建的。

　　Central heating is bad news for indoor plants.

　　中央供暖系統不利于室內植物。

　　She has been a central figure in the campaign.

　　她一直是這場運動的主要人物。

　　We've converted from oil to gas central heating.

　　我們已經把中央供熱系統由燃油改成了燃氣。