他独自一人住在伦敦一间昏暗的客卧两用出租屋里。He was living alone in a dingy bedsit in London.即便在昏暗的光线下，那台设备也显得陈旧不堪。Even in the dim light the equipment looked old and time-worn.船舱里灯光昏暗。Below decks, the lights were dim....
平衡方程和运动学关系式是与材料类无关的.The equations of equilibrium and kinematic relations are independent of the type of material.机械系统的运动学与动力学包括刚体的平面移动.Kinematics and dynamics of mechanical systems including rigid bodies in plane motion....