He is a nostalgiafag, always longing for the good old days.

The erector spinae is an important muscle for keeping the back straight.

He made a lamp in the shape of a hexagonal prism.

His loyalty is so great that everyone acknowledges it.

Dear Sirs, I am under your care.

He is struggling with a methamphetamine addiction.

My room is the quietest in the house.

The utility pole fell and blocked the road.

It's difficult to understand his inmost feelings.

Astrobiology is a very interesting field of study.