When walking on the snow, drag your legs to leave two trails on the ground, like a vehicle.
下雪后，走路时双脚不要离开地面，像汽车一样让自己身后留下两道痕迹。
2
The bride's long dress began to drag along ground.
新娘的长连衣裙开始拖地前行。
3
To study the effect of aerodynamic drag in the solar array spreading on the ground, a calculation method of time-varying aerodynamic drag was put forward based on dynamic meshes in this paper.