北方的冬天寒冷而又漫长,采暖期一般从每年的10月中下旬(越往北采暖开始的时间越早,结束的也更晚)开始至翌年的3月末或4月初结束。在塑钢窗尚未被大量使用的20世纪90年代以前,每到秋末冬初,住平房的人家要做的一件事就是溜窗户缝。屋里的热乎气儿是跑不掉了,但外面 The northern winter is cold and long, and the heating period generally begins in late to mid-October of each year (the warmer the north, the sooner the end is started) and ends in late March or early April of the following year. Before the plastic windows were heavily used before the 1990s, every single bungalow to do was to slip through the windows every winter and early winter. The warmth of the house is run away, but outside