| 摘要 |
A container is disclosed. The container has a side part, an upper part, a lower part, and a cavity formed by the side part, the upper part, and the lower part. The container also has a material disposed in the cavity. The side part has at least one protrusion and at least one recess. The side part is permeable to water. The side part is also nonpermeable to the material disposed in the cavity. |
