sentences: touch big nothing with bare nose is difficult & hair is thin ->  seeing a hair with bare eyes is difficult  touch a wig with bare nose is difficult & texture of an object can sometimes be told by looking at the object -> seeing the texture of a hair with bare eyes is difficult seeing the texture of a hair with bare eyes is difficult  touch the compound of a wig with bare nose is difficult & magnifying makes seeing small things easier -> magnifying can help study the texture of a hair