He is an excellent troubleshooter, he solved our system's problems quickly.

The steward is conducting a safety check inside the aircraft.

He spent time preparing for the speech.

He is good at playing the euphonium.

My sister is practicing the euphonium.

I want to go to Lappeenranta, a city in Finland.

These glasses are made of polycarbonate.

This product is made of polystyrol.

Using this free software will make your work more efficient.

This cake is generously topped with whipped cream.