So, they developed this bifurcated tool, which would be appl--you'd put the stuff on the surface of the tool and then you'd scratch the skin in a certain way so that you could produce sort of a reproducible introduction of the vaccine into the skin.

所以他们发明了一种分为两叉的工具,把疫苗抹在这种工具表面上,然后以某种方式在皮肤上刮,这样就能将疫苗,重复不断地引入到皮下

耶鲁公开课 - 生物医学工程探索课程节选

We still feel like we've only started to scratch the surface on what Sony's done here, so it's best if we dissect that in our full review.

ENGADGET: Sony S1 and S2 hands-on Hands-on

And, though much has been done to digitize content, it is impossible to scratch the surface, especially on the budget afforded to libraries today and in times past.

FORBES: Will Public Libraries Become Extinct?

On the surface, that's all there is to it, but scratch the surface and "The Weir" proves to be a profound meditation on the twin themes of loneliness and community, told so theatrically that you'll savor each peat-scented phrase.

WSJ: Truth Is Scarier | The Weir | Irish Repertory Theatre | The Master Builder | Brooklyn Academy of Music | By Terry Teachout