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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, ...

Источник: Русско-английский научно-технический словарь на Gufo.me