a.造句

A closed curve bounding a plane area.

A plantain is similar to a banana.

It isn't a panacea.

A star during most of its life is a main-sequence star, which consists of a core, radiative and convective zones, a photosphere, a chromosphere and a corona.

Each drawer has a drawer heading and a content area.

I'm not a part of a redneck agenda.

The peanut is not really a nut, but a pea.