Warm air escapes our homes easily, so adding draught excluders or a rolled-up towel to block these gaps will help.
暖气很容易从我们的家中逸出，因此，使用防风罩或用卷起的毛巾来堵塞家中的缝隙将有所帮助。
英语百科
Draught excluder
A draught excluder or draft stopper is used to eliminate cold draft and slow heat loss. It is placed in the bottom crack of doors and windows. Tubular sand-filled fabric draught excluders are commonly referred to as "door snakes" in Australia.