我已经从客户那里拿回那个电脑回来.Translate it into English.

题目

我已经从客户那里拿回那个电脑回来.Translate it into English.
Which is correct?Please provide a better answer and explain in mandarin.
1)I have taken back the computer from customer.
2)I have collected back the computer from customer.
3)I have collected the computer from customer.
4)I collected the computer from customer.

答案

1) 是对的
1）中的take back表示拿回
2）3）4）中的collect back表示收集回,collect表示收集,意思不对