come down to earth与bring down to earth 是什麽意思?

come down to earth是个固定的用法,表示"回到现实,实际一点"bring down to earth应该不是个固定的词组,但是我觉得意思跟上面是一样的,只不过用的对象不同,例如:You're always dreaming of being a film star。I think you'd better come down to earth。你总是梦想着成为电影明星。我觉得你最好现实一点。He's always dreaming of being a film star。I think you'd better bring him down to earth。他总是梦想着成为电影明星。我觉得你最好把他拖回现实。