Reinhard Strey of the University of Cologne is, however, having another go. He thinks he has cracked the main (and obvious) difficulty—that oil and water do not easily mix.

事实上这个方法很多年前便已为人知晓，但是之前试图将其转化为实践技术的尝试都失败了，然而克隆大学的莱茵哈德斯特雷现在又卷土重来，他认为自己已经攻克其中主要的（也是最明显的）的难关—油和水不易混合的问题。

youdao

Reinhard Strey of the University of Cologne is, however, having another go. He thinks he has cracked the main (and obvious) difficulty—that oil and water do not easily mix.

事实上这个方法很多年前便已为人知晓，但是之前试图将其转化为实践技术的尝试都失败了，然而克隆大学的莱茵哈德斯特雷现在又卷土重来，他认为自己已经攻克其中主要的（也是最明显的）的难关—油和水不易混合的问题。

youdao