barrier reef
Longman Dictionary of Contemporary English 5++LDOCE 5++ˌbarrier ˈreef noun [countable] DNSGa line of coral (=pink stone-like substance) separated from the shore by water 堡礁〔一种珊瑚礁〕
Examples from the Corpus
barrier reef• Thus, the fringing reef would be changed into a barrier reef and finally into an atoll if the island subsided completely.ˌbarrier ˈreef nounChineseSyllable
a coral Corpus stone-like separated (=pink of substance) line
barrier reef
ˌbarrier ˈreef
noun [countable]
a line of coral (=pink stone-like substance) separated from the shore by water
ˌbarrier ˈreef
noun [countable]a line of coral (=pink stone-like substance) separated from the shore by water