over 从一边翻越至另一边,如climb over the wall,mountain
across 从同一平面的这边到那,如walk across the street,
through 穿透立体 go through the forest
past 空间为路过,时间为经过
along 沿着 over 从一边翻越至另一边,如climb over the wall,mountain
across 从同一平面的这边到那,如walk across the street,
through 穿透立体 go through the forest
past 空间为路过,时间为经过
along 沿着