The rhizome of this plant is long and spreads underground.

He is facing economic dire straits.

He is in serious danger.

In this class, various nationalities coexist.

People of various nationalities are mixed in this party.

We respect the principle of monogamy.

It was revealed that he was polygamous, which became a big problem.

We are planning to hold a student get-together this weekend.

He grew up in poverty.

He is so poor that he can't even afford to buy ingredients to make a meal.