20度应该是可以的。但具体温度我也不清楚。太热了,尤其是晚上,很容易上火的。顺便问一下,你住在哪呀?
刚从房屋委员会的网站上看的:
Though neither the law nor most municipal by-law are specific in this area, it is generally accepted that, under normal conditions, interior apartment temperatures should run around 21° C (70° F).