change the leg meaning in Chinese

改变步伐
改换步伐

That honest tradesman s manner of receiving the look , did not inspire confidence ; he changed the leg on which he rested , as often as if he had fifty of those limbs , and were trying them all ; he examined his finger - nails with a very questionable closeness of attention ; and whenever mr . lorry s eye caught his , he was taken with that peculiar kind of short cough requiring the hollow of a hand before it , which is seldom , if ever , known to be an infirmity attendant on perfect openness of character
他老是把支撑身子的两条腿换来换去，仿佛他长了五十条腿要一条一条地去检查似的。他也检查手指头，那副专心致志的样子也很令人生疑。罗瑞先主的眼光跟他的眼光一接触，他就用乎捂在嘴上咳嗽起来，咳声短促，咳法也特别。