用泡沫封一下就可以了。
http://www.homedepot.com/p/GREAT-STUFF-16-oz-Gaps-and-Cracks-Insulating-Foam-Sealant-with-Quick-Stop-Straw-99053937/206977048
用泡沫封一下就可以了。
http://www.homedepot.com/p/GREAT-STUFF-16-oz-Gaps-and-Cracks-Insulating-Foam-Sealant-with-Quick-Stop-Straw-99053937/206977048