What is heavier in summer than in winter?

谜语题目：What is heavier in summer than in winter?（什么东西夏天比冬天重？）
 
 
谜语解析：heavy adj．重的；交通量大的，繁忙的
 
 
谜语答案：heavy adj．重的；交通量大的，繁忙的

上一篇：What clothing is always sad?
下一篇：Who will be your real friend, a poor friend or a rich one?