1 (used about a person) to sit or stand with your legs on each side of sb/sth （指人）骑，跨坐，跨立: to straddle a chair 跨坐在椅子上

2 (used about a building, bridge, etc) to cross, or exist on both sides of, a river, a road or an area of land （指建筑物、桥梁等）跨越，横跨，跨立于