If you sit or stand ~ something, you sit or stand with one leg on each side of it.
...three youths who stood ~ their bicycles and stared.
ADV: ADV after v, be ADV
If you sit or stand ~ something, you sit or stand with one leg on each side of it.
...three youths who stood ~ their bicycles and stared.
ADV: ADV after v, be ADV
Collins COBUILD. Толковый словарь английского языка для изучающих язык Коллинз COBUILD (международная база данных языков Бирмингемского университета) . 2012