He simultaneously interpreted the speech at the meeting.

How much is the toll for the highway?

How much is the toll for this highway?

This road is a dead end, so we have to find another way.

He was observing the distant birds using binoculars.

He read the small print using a magnifying glass.

He is reading the daily scripture.

I used binoculars to observe birds in the mountains.

The study of phonons is an important field in physics.

This factory is our main source of supply.