It is important to understand the finiteness of this project.

The safety of this car is very high.

Even as he gets older, his virility does not diminish.

He determined that the bird was male from its distinctive feather color.

He has lived without going against the fate that was decided by his birth.

She is prone to worrying, so she is always thinking about something.

He decided to undergo sex change surgery.

He decided to undergo sex change surgery.

His sociability is an important factor for his success as a leader.

He is suffering from acquired immunodeficiency syndrome.