Poor old aunt Mary doddered down the street.

可怜又年迈玛莉婶婶蹒在街上。

He doddered down the street.

他踉踉跄跄街去.

In this paper,the methods of producing sodium diacetate have been described.It is widely used as high effective preservative in grains,dodders,foods and so on.

论述了双醋制备方法及其在防腐、保鲜、洗涤等领域应用。