sealing
🇺🇸
/ˈsiːlɪŋ/
🇬🇧
/ˈsiːlɪŋ/
the act of closing something tightly to prevent leakage or to keep something inside
The workers were busy with the sealing of the windows to keep the cold air out.
工人們忙於封閉窗戶以防止冷空氣進入。