The sound of a refrigerator door being opened, and then the sound of the freezer in operation. A few variations follow. 冰箱 聲道:2 類型:wav kitchen、refrigerator、humming、hum、appliances、drone、cooler、freezer、fridge、storage、cooking、household-appliance、appliance、food、compressor、food-storage、droning 廚房、冰箱、低唱、哼、家電、無人駕駛飛機、冷卻器、冰箱、冰箱、存儲、烹飪、家用電器、器具、餐飲、壓縮機、食物貯藏、嗡嗡 資料來源:freesound ( https://freesound.org )