Only by noting "smelling" merely as "smelling" etc, we cut off concepts. Idea of what is smelt, tasted or touched should also be disregarded.

只有通过观照“嗅”仅仅是“嗅”，等等，我们才能切断概念。嗅到的是什么或者尝到的是什么或者触到的是什么，也无需去想。

youdao

But from here we may say that to note "seeing" without thinking would cut off a lot of concepts. It would also help to disregard the shape and forms as far as possible.

但是从这里我们可以说观照“看”而不是在思维会切断很多概念，也有助于尽量不形成形状和形体的概念。

youdao