In recent years, freezing or gassing them with carbon dioxide has been used.
在近些年，用二氧化碳冻住它们或者毒死它们的方法也在采用。
Liquid carbon dioxide is used widely in the food industry for freezing meats, poultry, vegetables, and fruits.
液态二氧化碳在食品工业中得到了广泛的应用，用于冷冻肉类、家禽、蔬菜和水果。
Liquid carbon dioxide is used widely in the food industry for freezing meats, poultry, vegetables, and fruits.
液态二氧化碳在食品工业中得到了广泛的应用，用于冷冻肉类、家禽、蔬菜和水果。
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