She is engaged in research on climate change.

In those cases, it's best to consult a lawyer.

The information is stated in the book.

Back in the day, people used to communicate through letters.

He wore a four-in-hand tie to the party.

The government provides grant-in-aid to individuals and organizations for educational purposes.

I was startled when the jack-in-the-box popped out.

I saw a beautiful jack-in-the-pulpit in the forest.

The man in the street often has a different perspective than experts.

The mortals in the Roman Catholic Church believe that mortal sins are serious sins that do not disappear even after death.