rolling ground

Three-axis turntables are the key equipments for ground semi-physical flight simulation of missiles and other flying devices and they are used to simulate rolling 、 yawing and pitching attitude changes space motion for aero craft.

三轴转台是用于导弹或其它飞行器及地面半实物仿真的关键设备，它可以模拟飞行器在空间进行中滚转、俯仰、偏航等姿态的运动，广泛应用于航空、航海、国防建设领域中。

The hill has a good camping ground with fresh air, and rolling streams.

小山上有清新的空气 、 潺湲的溪水,是野营的好去处.

Based on this model, a concentric circle gait is planned to make Aibo walk with its front feet rolling on the ground, and the parameters of fast and stable walking are obtained with machine learning.

在此模型的基础上进行前腿在地面滚动行走的同心圆步态规划，并通过机器学习得到了平稳、快速的行走步态参数。

The football player is rolling on the ground as if hurt badly in the leg.

那个足球运动员在地上滚来滚去,好像是腿部受了重伤.

For it is the nature of a log or stone to remain motionless on level ground, and to move when on a slope; if four-cornered, to come to a standstill, but if round-shaped, to go rolling down.

木石的性情是处于平坦地势上就静止不动，处于陡峭的斜坡上就滚动，方形容易静止，圆形容易滚动。