A gray and black-haired male is holding his glasses in one hand while looking at something in the other hand ; surrounded by numerous amounts of machines .
A man wearing glasses while working on a machine .
A gray and black-haired male is holding his glasses in one hand while looking at something in the other hand; surrounded by numerous amounts of machines.
A man wearing glasses while working on a machine.
One cannot be wearing and holding glasses in hand at the same time.
One can not be wearing and holding glasses in hand at the same time .