这个短语的直译是 "他们梦想拥有车"，它的英文表达应该是 "they dream of having a car"。这个短语来源于英语中拥有某样东西的梦想，常常表示为 "dream of having something"。下面是一些例句：
他们梦想拥有豪华轿车，能够随时随地开着它去旅行。
They dream of having a luxury car that they can take on adventures anytime, anywhere.
她们梦想拥有一个大家庭，可以和爱的人一起温馨地生活。
They dream of having a big family and pving happily ever after with their loved ones.
他们梦想拥有一个自己的城堡，可以在里面过上令人满意的生活。
They dream of having their own castle where they can pve a pfe of luxury.