Yes, majority of people have airconditioning at home.

　　是的，大多數(shù)人家里都有冷氣。

　　The airconditioning sucks. I think it may be very old as it throws in damp air.

　　空調(diào)實(shí)在是糟透了，我想估計(jì)是太舊了，因?yàn)榇蜷_以后空氣都有股潮味兒。

　　They would need to install new airconditioning and insulation, new light fixtures and so on.

　　他們需要安裝新的空調(diào)和隔熱材料、新的照明設(shè)施固定裝置等等。

　　Secondly, when we leave our house or classroom, we would better turn of the lights, fans or airconditioning.

　　其次，當(dāng)我們離開我們的房子或教室時(shí)，我們最好把燈，風(fēng)扇或空調(diào)關(guān)了。