他想发财，然而这只是不可能实现的梦想。

He wanted to be rich but it was an impossible dream.

《牛津词典》

为此目的而包租船只是不可能的。

It is impossible to charter a ship for the purpose.

youdao

他想发财，然而这只是不可能实现的梦想。

He wants to be rich but it's an impossible dream.

youdao

We didn't have the same methods of diagnosis that we do now, so maybe it was just not diagnosed then.

那时医生的诊断手段远不及现在,因此,这些病可能只是诊断不出来

耶鲁公开课 - 生物医学工程探索课程节选

If a cell membrane was indeed just a lipid bilayer, then glucose could never enter the cell because it can't permeate through cell membranes.

如果细胞膜只是一个脂质双分子层的话,葡萄糖就不可能进入细胞,因为它不能渗透过细胞膜

耶鲁公开课 - 生物医学工程探索课程节选

Talking about my mind cannot just be a way of talking about my body.

谈论心灵,不可能只是谈论身体的另一种表述

耶鲁公开课 - 死亡课程节选