A man is extracting juice from a machine in his kitchen.
A man talks while using a machine that pours liquid in a clear jar on a scale.
In a foreign language, a man is demonstrating some sort of machine.
A man demonstrates the use of a scientific piece of machinery.
A man talks as he shows how a machine is able to make an object.
A man stands and talks about a machine on a workbench
a man standing at a machine showing you how it works
A man is standing in a laboratory and is using a small scale to measure something in a jar
A man is speaking while using equipment in a laboratory.
A man is presenting a machine that is used to fill mason jars with honey.