no salt added的用法和样例：
- Sometimes feta is very salty, in which case no salt needs to be added.
- Fresh water is called freshwater because there is no salt.
- This one would make a ___17___-based disinfectant out of salt added to water.
- There was at one time no salt for cooking,not to mention other things.
- This one would make a chlorine-based disinfectant out of salt added to water.