At the beginning of the second century A.D., the inhabitants built their first major structure, a temple. (ambergrisCaye.com)
Homeotic, or Hox genes specify the identity of segments along the embryo's body axis and regulate the formation of major structures in every animal studied. (uchospitals.edu)
«There are a lot of different major structures for the flight test vehicles that are going through the factory now,» Hernandez said. (spaceflightinsider.com)