He specialises in the mechanics of locomotion.他专攻运动力学。By land, air or sea, birds are masters of locomotion.无论是通过陆地, 飞越空中还是穿过海洋, 鸟应算是运动能手了.Locomotion had at times seemed impossible.有些时候简直象是寸步难行了....
He specialises in the mechanics of locomotion.他专攻运动力学。Flight is the form of locomotion that puts the greatest demands on muscles...飞行是对肌肉要求最高的运动形式。By land, air or sea, birds are masters of locomotion.无论是通过陆地, 飞越空中还是穿过海洋,...