底部較寬的水瓶。為了沉澱雜質，瓶身下方特地做得比上方更寬。
A water bottle with a wide base. Its bottom is flared to help sediment sink down, making it easier to separate clear water from any settled debris.
底部較寬的水瓶。為了沉澱雜質，瓶身下方特地做得比上方更寬。
A water bottle with a wide base. Its bottom is flared to help sediment sink down, making it easier to separate clear water from any settled debris.