78. Clever though this is, it is just a stepping stone towards the direct incorporation of fuel cells into portable devices and, in particular, laptops—the application that remains the industry’s Holy Grail. 

【结构分析】 

本句句首是though构成的部分倒装,还原后应为though this is clever。主句为it is just a stepping stone,towards引导短语结构 the direct incorporation of fuel cells into portable devices and… laptops修饰前面的a stepping stone。破折号后面的the application是同位语作用, that remains the industry’s Holy Grail是定语从句。

【词汇】

 a stepping stone 垫脚石

incorporation 合并,整合

portable 可携带的,可搬运的

laptop 笔记本电脑

【参考译文】 虽然这很聪明,但它只能算是通往直接将燃料电池与便携设备——特别是笔记本电脑——整合的道路上的垫脚石,这一技术运用现在仍是工业界的圣杯。