pick up和brought back区别

pick up是捡起或者接的意思，而brought back 则是带回来的意思，区别可以从以下例子看出：

Please go to the rail station to pick up your our daughter, as I have brought back our son and his friends. 请去火车站接我们的女儿，因为我已经带回了我们的儿子和他的朋友。