We plan to sail on a yacht during the summer vacation.

Studying the history of the Imperial Examination is important for understanding the past of our country.

Sexual intercourse is one of the basic human desires.

They were having sex in secret.

His resounding voice echoed throughout the room.

The ringing sound of the bell filled the quiet night sky.

His disease has spread to his vital organs.

We decided to start the game on the defensive.

We decided to start the game on the defensive.

In Sanskrit phonology, retroflex sounds play an important role.