I bought a new swim cap to swim in the pool.

The cell membrane protects the cell and controls the entry and exit of substances.

A jellyfish is one of the beautiful creatures of the sea.

He ordered a highball.

The activity of brain cells directly affects our thoughts and actions.

I decided to keep a housekeeping book to understand my monthly income and expenses.

His life is very ordinary.

The cell membrane plays an important role in maintaining the structure of the cell.

I bought a new swim cap.

He held my hand.