He measured muscle activity using an electromyograph.

The doctor used an electrocardiograph to check the condition of my heart.

I examined muscle activity using an electromyogram.

He searched for a flashlight in the darkness.

He fulfilled his responsibilities as a government official.

We must absolutely obey the orders of the emperor.

He was promoted to a high-ranking position.

I will go to the library and borrow a book.

This coast is greatly affected by the ebb and flow.

Being prepared for an earthquake is exactly what it means to be prepared against adverse events.