I
• The discovery illuminated ( or elucidated ) the cause of some diseases.
• This is a complicated procedure and cannot be covered in detail here.
• The book covers all fields of petroleum technology.
• One great literary masterpiece often illumines a civilization.
• This mechanism has not been fully elucidated .
II
• Shine a light on a cockroach and it will scurry away.
• In this microscope a beam of electrons illuminates the specimen to be studied.
• When white light is shone on to many complexes, ...