| 例句 |
Deep freezing is the simplest way of preserving food.深冻是保藏食品最简便的办法。There is great public concern about some of the chemicals used in food preservation.公众对一些用于食物保藏的化学物表示极为担忧。Refrigeration and canning facilities are growing to take care of surplus seasonal foods.冰冻和装罐设备正在不断增多，以便保藏多余的季节性食物。 |