the ties of kinship亲属关系The ties of kinship may have helped the young man find his way in life.亲情可能帮这个年轻人找到了生活的方向。I feel a strong kinship with him.我觉得与他十分投契....
旋转的陀螺正在失去动量.The spinning top was losing momentum.下落的物体落下时动量增加.A falling object gains momentum as it falls.雷达 、 光和其它形式的电磁波将其动量和能量通过空间输送出去.Radar, light, and other electromagnetic waves transfer momentum and energy through ...