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.

When her son goes to school, the mother always says 'see you later'.

Have a good day at school, son.

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

His life is very ordinary.

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

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

I bought a new swim cap.

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