copy cat 盲目模仿者；抄袭者

【例句】
She is just a copy cat who follows her sister's lead in everything.
她只是个盲目模仿别人的人，什么都跟她姐姐学。

Here's a look at how Apple has shoved Microsoft aside as the company with the worst reputation as a monopolist, copy cat and a bully.
来看看苹果如何把取代微软成为最臭名昭著的垄断者、抄袭者、业霸。