( coral reefs)
A coral reef is a long narrow mass of coral and other substances, the top of which is usually just above or just below the surface of the sea.
An unspoilt coral reef encloses the bay.
N-COUNT
( coral reefs)
A coral reef is a long narrow mass of coral and other substances, the top of which is usually just above or just below the surface of the sea.
An unspoilt coral reef encloses the bay.
N-COUNT
Collins COBUILD Advanced Learner's English Dictionary. Английский словарь Коллинз COBUILD для изучающих язык на продвинутом уровне. 2006