center的形容词

　　I am thinking of installing central heating.

　　我在考虑安装中央供暖系统。

　　The house is built around a central courtyard.

　　这房子是围绕着中央的庭院而建的。

　　Central heating is bad news for indoor plants.

　　中央供暖系统不利于室内植物。

　　She has been a central figure in the campaign.

　　她一直是这场运动的主要人物。

　　We've converted from oil to gas central heating.

　　我们已经把中央供热系统由燃油改成了燃气。