Whenever I go camping, I always bring a sleeping bag.

I tried a new frappuccino at Starbucks.

The new product is unpopular, and sales are declining.

The new product was unpopular, and sales fell.

He used to be a member of the mafia.

Phosphine plays an important role in inorganic chemistry.

Phenol is a type of chemical substance, and it has a distinctive strong smell.

Alkenes play an important role in organic chemistry.

He connected a new effects unit to his guitar.

This effector regulates the response of cells.