insulation
🇺🇸
/ˌɪnsəˈleɪʃn/
🇬🇧
/ˌɪnsjuˈleɪʃn/
material that stops heat, sound, or electricity from passing through something
Adding insulation to your walls keeps your home warm in winter and cool in summer.
在牆壁中添加隔熱材料可以讓你的家在冬天保持溫暖,在夏天保持涼爽。