| 摘要 |
A nursing device, as disclosed, includes a tubular container adapted for holding a liquid having a top end, a bottom end, and a longitudinal axis, wherein the container has a symmetrical, cross-sectional area substantially along the longitudinal axis. The nursing device also includes a nipple attached to the top end of the container and directional marker on the surface of the container for orienting the tubular container. The nursing device further includes a plurality of point markers located on the surface of the tubular container in space relationship from the top end of the tubular container and perpendicular to a plane formed by the longitudinal axis and directional marker.
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