Translation of "Decay" in Chinese

Extreme is my decay.

我是多么的衰弱啊！（请核对原文是否有误）

Salt helps to preserve food from decay.

鹽可以幫助保存食物避免腐爛。

Many local traditions have fallen into decay in recent years.

近几年，很多当地的传统都衰败了。

The decay of the shrine is due, in part, to acid rain.

廟宇的毀壞有一部分要歸因於酸雨。

- We can't sit there looking wistfully on as this city falls into decay.
- We can't just look on dejectedly while this city continues to go into decline.

我们不能愁闷地看着这个城市就这样衰退下去。