底部宽大的水瓶。遇到有沉淀物时，特意将下部做得比上部更宽，以便沉淀分离。
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.
底部宽大的水瓶。遇到有沉淀物时，特意将下部做得比上部更宽，以便沉淀分离。
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.