| http://www.w3.org/ns/prov#value | - Besides, between the pedal and the post is defined with a transmitting mechanism including a rotatable wheel pivotally disposed on the base and having a chain, one end of which is coupled to the bottom of the post, and another end of which is connected to the pedal, mounted thereon, such that while the pedal moves vertically, the post is urged to move vertically as well, thereby obtaining a quick
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