English to Spanish Art/Literary Religion

I think of this when I see these now almost extinct old steam engines puffing away. These iron horses are like living creatures breathing steam with fire in their bellies. The fireman’s job is to stoke the fire and ***get a full head of steam going***. When the steam pressure is up, the driver can do one of two things. He can either pull the whistle lever or he can turn the lever that directs the power to the pistons.