| 摘要 |
A container has a body with side walls and a bottom, as well as a cover connected to the side walls but below the rim. The cover is shaped as an offset dome or a sloped roof such that the bung is adjacent a side wall and at the highest point of the cover when the container is upright. A ridge runs from the bung to the side wall diametrically opposite the bung, thereby creating a downward slope from the ridge to the line of intersection of the cover with the side walls. The line of intersection of the cover with the side walls may be horizontal or at a slight angle upwardly to the position of the bung. An air tube may be placed within the bung and extend to the point of intersection of the side wall with the bottom which is farthest from the position of the bung. An alternative air tube or a second air tube may be placed within the bung and extend to the point of intersection of the side wall with the cover which is farthest from the position of the bung.
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