The dancers leap in seeming defiance of the laws of gravity.那些舞者轻盈地跳跃，似乎万有引力定律完全不起作用。The law of gravity is universal.引力定律适用于万物。Buildings leaned crazily, defying the law of gravity.建筑物倾斜得非常厉害，违反了引力定律。The teacher gave a demonstration of the law of gravity.教师论证了引力定律。