When I raised my voice in the library, my friend said, 'Shh.'

The 600-cell is one of the regular polytopes in four dimensions.

Please don't leave the door open.

He has three new cars in total.

This mineral is called anhydrite.

Maintaining oral hygiene is very important for overall health.

He is working at the pithead.

We steered the ship towards the harbor entrance.

He practices every day to improve his sailing skills.

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