delinquent noun [C]. âº a âperson, usually âyoung, who âbehaves in a way that is âillegal or not âacceptable to most âpeople: âjuvenile delinquents.
Sahelanthropus may have walked on two legs. The oldest evidence for walking on two legs comes from one of the earliest humans known, Sahelanthropus. Walking upright may have helped this species survive in the diverse habitats near where it livedâincluding forests and grasslands.
An upright bike allows you to stand on the pedals as exercise, varying your muscle use and creating a higher calorie burn. Putting your road bicycle on a bike trainer, or stand, allows you to turn it into an exercise bike you can use during inclement weather.