He continued to work to protect his family, sacrificing his own happiness.

I was at a loss for words at her reaction.

This product is a parallel import.

We need to calculate the harmonic mean of this dataset.

The latest research results from NASA have been announced.

They opposed the plan in concert.

My daughter goes to the nursery school every day.

Bioweapons are a major threat to humanity.

The children were playing by beating the pellet drum.

The transverse arytenoid muscle is part of the muscles of the larynx and regulates the tension of the vocal cords.