move like a cat：“像猫一样行动”。猫是一种非常机敏警觉的动物，动作轻盈、悄无声息。人们就用“像猫一样行动”来比喻“机敏、悄无声息地行动”。

【例句】
Although the thief moved like a cat, he was still found by the dog.
尽管小偷行动机敏，但他还是被狗发现了。

When changing position, you should move like a cat. Exerising the internal power is like the delicate reeling of silk.
迈步如猫行，运劲如抽丝。