A protruding rim, edge, rib, or collar, as on a wheel or a pipe shaft, used to strengthen an object, hold it in place, or attach it to another object.
凸缘车轮或管道上突出的边、缘、肋条或环圈，用来增加物体强度、固定物体或使某一物体附着在另一物体上
It is not true that woman is made from man's rib; she is really made from his funny bone.
女人并非真的以男人的肋骨来造成的；其实，她是由男人的“笑骨”[尺骨]造成的。
How many ribs does a man have?
一个人有几条肋骨？
