Air-condition is a kind of machine used at home, at the office or in the shopping hall and any other places. It is designed to change the air temperature and hunidity within an area.

Air-conditioner is a kind of machine used at home, at the office or in the shopping hall and any other places. It is designed to change the air temperature and humidity within an area. Air-conditioner is used for cooling and sometimes heating depending on the air properties at a given time to create more favourable conditions. It's frequently used during in the hot summer. In the north of China, it's used for heating in the cold winter. I like air-conditioner in the summer days and nights. Once it turns on, the cool air will spread all over the room and I don't want to leave there anymore. But people often feel dry in the air-conditioning area. Therefore, remember to drink more water to prevent you from too dry.

空调是一种供居家，办公，商场以及其他场所使用的电器。它是用来改变某一区域内的空气温度和湿度的。空调是用来降温或升温的，它是根据特定时间的空气性质来创造更适合的条件的。空调在炎热的夏天使用频率最高。在中国的北方，空调在寒冷的冬天用来升温。夏天我喜欢日夜吹空调。只要一打开它，凉快的空气就会散布整个房间，我就再也不想离开房间了。但是有的人在有空调的地方会觉得皮肤干燥。因此，记得要多喝水以防干燥。